Finding the Fourth Proportional to 22,757.05, 31,401.62 and 12,684.29

Step by Step Solution

1. Step 1: Write the proportion equation
   22,757.05 : 31,401.62 = 12,684.29 : x
2. Step 2: Convert to fraction form
   22,757.05/31,401.62 = 12,684.29/x
3. Step 3: Cross multiply
   22,757.05x = 31,401.62 × 12,684.29
4. Step 4: Simplify right side
   22,757.05x = 398,307,254.55
5. Step 5: Solve for x
   x = 398,307,254.55/22,757.05
6. Step 6: Final answer
   x = 17,502.59