Answer:
First, we need to convert 15 American dollars to Euro:
15 USD * 17.1 Euro/USD = 256.5 Euro
Then, we can use the exchange rate between Euro and Dominican Pesos to convert Euro to Dominican Pesos:
1 Euro = 435.2 Dominican Pesos/7 Euro
Therefore, 256.5 Euro = (256.5/7) * 435.2 Dominican Pesos = 9,475.2 Dominican Pesos
Finally, we can use the proportion:
12 USD / 15 USD = x Dominican Pesos / 9,475.2 Dominican Pesos
Solving for x, we get:
x = (12/15) * 9,475.2 = 7,580.16 Dominican Pesos
Therefore, 12 American dollars is worth 7,580.16 Dominican Pesos.