Finding the Fourth Proportional to 31,566.86, 43,522.88 and 20,217.72

Step by Step Solution

1. Step 1: Write the proportion equation
   31,566.86 : 43,522.88 = 20,217.72 : x
2. Step 2: Convert to fraction form
   31,566.86/43,522.88 = 20,217.72/x
3. Step 3: Cross multiply
   31,566.86x = 43,522.88 × 20,217.72
4. Step 4: Simplify right side
   31,566.86x = 879,933,401.43
5. Step 5: Solve for x
   x = 879,933,401.43/31,566.86
6. Step 6: Final answer
   x = 27,875.23