The formula would be set up as ratios (or fractions). The ratio is 7:5, which in total is 12. There were 5 no answers out of 12, so the fraction = 5/12.
The second fraction has a total of 8244, however you do not know the amount of no votes, so the variable placeholder will be called "x".
The final formula would be:
5/12 = x/8244
You do cross multiplication and you get:
12x = 41220. You divide both sides, and you get x = 3435
