Finding the Fourth Proportional to 22,778.31, 34,139.52 and 12,925.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,778.31 : 34,139.52 = 12,925.89 : x
2. Step 2: Convert to fraction form
   22,778.31/34,139.52 = 12,925.89/x
3. Step 3: Cross multiply
   22,778.31x = 34,139.52 × 12,925.89
4. Step 4: Simplify right side
   22,778.31x = 441,283,680.17
5. Step 5: Solve for x
   x = 441,283,680.17/22,778.31
6. Step 6: Final answer
   x = 19,372.98