Yep, it's a little unclear on where the values are coming from. It's been updated for the next version to be clear.
The fuel price is the total cost of fuel for that PIREP. It would be a fuel cost as KMIA times the fuel used. So it used 8364 kb of fuel, and the total prices came out to 35045.2, so 35045.2/8364 = 4.19$/kg for fuel, which seems about right (looking at http://api.phpvms.net/fuel/get/kmia, which is the current fuel price).
Load was 122, where the maximum for that aircraft is 180. That makes about sense, it's not always a full flight. I'm not sure what the price for that schedul is (the flight number is missing?), but it would be 122 * price, minus that 35045.2 = revenue for the flight. This is made clearer in the next version, but if you goto the finances for the current month, you'll be able to see a clear tabulation of the totals.
Hope that helps!