I'm not sure if this is the appropriate question to ask in the forum, so I apologize in advance if it isn't. I'm new here and still trying to understand the environment.

I own my own consulting firm. In doing so, I often find myself in the area of sales. Most of my business has come through referrals, thankfully, I have an excellent reputation in my industry (if I do say so myself).
However, I'm really blocked on what to do with clients who go M.I.A. on me. I have an example where a client was referred to me - we talked and had a great conversation. He requested I assist him on a project - I followed through on my end - he hasn't followed through on his. This man is the decision maker and the sole contact to make this project happen.
I am having a problem straddling the line between being assertive and too pushy. I don't want to be inappropriate here - it's been three weeks and nothing has happened (which is a LONG period of time in my business). I know the work is there and I have other competitors also trying to close this client. I'm not sure what the balance is in providing my services - and just being another annoying "sales type."
Anyhow - any input would be helpful. Any suggestions will be taken with gratitude.
Michael - I'm seeing you in L.A. next month!

Thanks all.
Knoxy