Can't sort in the millions

I'm using DT vs. 1.9.3 and I can't get numbers to sort in the millions. It only wants to sort the first 2 digits. I've tried every plug-in available but keep getting the same results. I checked and rechecked for any junk code in the HTML but it appears clean.

The problem is on the fourth column. Here's the link to the page. http://tinyurl.com/bnsxv3p

TIA

Kerry