Finding the Fourth Proportional to 22,593.27, 31,178.78 and 12,521.87

Step by Step Solution

1. Step 1: Write the proportion equation
   22,593.27 : 31,178.78 = 12,521.87 : x
2. Step 2: Convert to fraction form
   22,593.27/31,178.78 = 12,521.87/x
3. Step 3: Cross multiply
   22,593.27x = 31,178.78 × 12,521.87
4. Step 4: Simplify right side
   22,593.27x = 390,416,411.42
5. Step 5: Solve for x
   x = 390,416,411.42/22,593.27
6. Step 6: Final answer
   x = 17,280.21