Finding the Fourth Proportional to 22,528.52, 31,088.80 and 12,456.71

Step by Step Solution

1. Step 1: Write the proportion equation
   22,528.52 : 31,088.80 = 12,456.71 : x
2. Step 2: Convert to fraction form
   22,528.52/31,088.80 = 12,456.71/x
3. Step 3: Cross multiply
   22,528.52x = 31,088.80 × 12,456.71
4. Step 4: Simplify right side
   22,528.52x = 387,264,165.85
5. Step 5: Solve for x
   x = 387,264,165.85/22,528.52
6. Step 6: Final answer
   x = 17,189.95