Finding the Fourth Proportional to 22,785.59, 31,443.99 and 12,713.43

Step by Step Solution

1. Step 1: Write the proportion equation
   22,785.59 : 31,443.99 = 12,713.43 : x
2. Step 2: Convert to fraction form
   22,785.59/31,443.99 = 12,713.43/x
3. Step 3: Cross multiply
   22,785.59x = 31,443.99 × 12,713.43
4. Step 4: Simplify right side
   22,785.59x = 399,760,965.79
5. Step 5: Solve for x
   x = 399,760,965.79/22,785.59
6. Step 6: Final answer
   x = 17,544.46