Finding the Fourth Proportional to 22,528.18, 31,087.64 and 12,456.02

Step by Step Solution

1. Step 1: Write the proportion equation
   22,528.18 : 31,087.64 = 12,456.02 : x
2. Step 2: Convert to fraction form
   22,528.18/31,087.64 = 12,456.02/x
3. Step 3: Cross multiply
   22,528.18x = 31,087.64 × 12,456.02
4. Step 4: Simplify right side
   22,528.18x = 387,228,129.52
5. Step 5: Solve for x
   x = 387,228,129.52/22,528.18
6. Step 6: Final answer
   x = 17,188.61