Finding the Fourth Proportional to 25,137.50, 34,689.76 and 13,959.50

Step by Step Solution

1. Step 1: Write the proportion equation
   25,137.50 : 34,689.76 = 13,959.50 : x
2. Step 2: Convert to fraction form
   25,137.50/34,689.76 = 13,959.50/x
3. Step 3: Cross multiply
   25,137.50x = 34,689.76 × 13,959.50
4. Step 4: Simplify right side
   25,137.50x = 484,251,704.72
5. Step 5: Solve for x
   x = 484,251,704.72/25,137.50
6. Step 6: Final answer
   x = 19,264.12