Finding the Fourth Proportional to 22,577, 31,155.30 and 12,505.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,577 : 31,155.30 = 12,505.40 : x
2. Step 2: Convert to fraction form
   22,577/31,155.30 = 12,505.40/x
3. Step 3: Cross multiply
   22,577x = 31,155.30 × 12,505.40
4. Step 4: Simplify right side
   22,577x = 389,609,488.62
5. Step 5: Solve for x
   x = 389,609,488.62/22,577
6. Step 6: Final answer
   x = 17,256.92