Finding the Fourth Proportional to 25,139.70, 34,687.98 and 16,185.42

Step by Step Solution

1. Step 1: Write the proportion equation
   25,139.70 : 34,687.98 = 16,185.42 : x
2. Step 2: Convert to fraction form
   25,139.70/34,687.98 = 16,185.42/x
3. Step 3: Cross multiply
   25,139.70x = 34,687.98 × 16,185.42
4. Step 4: Simplify right side
   25,139.70x = 561,439,525.25
5. Step 5: Solve for x
   x = 561,439,525.25/25,139.70
6. Step 6: Final answer
   x = 22,332.79