Finding the Fourth Proportional to 22,577.85, 31,156.20 and 12,505.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,577.85 : 31,156.20 = 12,505.50 : x
2. Step 2: Convert to fraction form
   22,577.85/31,156.20 = 12,505.50/x
3. Step 3: Cross multiply
   22,577.85x = 31,156.20 × 12,505.50
4. Step 4: Simplify right side
   22,577.85x = 389,623,859.10
5. Step 5: Solve for x
   x = 389,623,859.10/22,577.85
6. Step 6: Final answer
   x = 17,256.91