Answer: i think the answer is Mark-7,620 Max-3,790 Matt-140 and Mitch-3690 if its not the answer im really sorry
First i divided 15,240 by 4 then subtracted 20 words from Max Then doubled Marks words then subtracted 100 words from mitch whitch left me with Marck-7620 Max 3790 Mitch 3690 and Matt-140 you should probably double check it tho because Matt might be wrong along with everything else.