Finding the Fourth Proportional to 22,593.32, 31,178.81 and 12,521.58

Step by Step Solution

1. Step 1: Write the proportion equation
   22,593.32 : 31,178.81 = 12,521.58 : x
2. Step 2: Convert to fraction form
   22,593.32/31,178.81 = 12,521.58/x
3. Step 3: Cross multiply
   22,593.32x = 31,178.81 × 12,521.58
4. Step 4: Simplify right side
   22,593.32x = 390,407,963.72
5. Step 5: Solve for x
   x = 390,407,963.72/22,593.32
6. Step 6: Final answer
   x = 17,279.80