Finding the Fourth Proportional to 22,560,723.12, 31,133,836.56 and 12,902,931.12

Step by Step Solution

1. Step 1: Write the proportion equation
   22,560,723.12 : 31,133,836.56 = 12,902,931.12 : x
2. Step 2: Convert to fraction form
   22,560,723.12/31,133,836.56 = 12,902,931.12/x
3. Step 3: Cross multiply
   22,560,723.12x = 31,133,836.56 × 12,902,931.12
4. Step 4: Simplify right side
   22,560,723.12x = 401,717,748,635,017.69
5. Step 5: Solve for x
   x = 401,717,748,635,017.69/22,560,723.12
6. Step 6: Final answer
   x = 17,806,067.05