Finding the Fourth Proportional to 25,231.88, 34,818.61 and 13,899.15

Step by Step Solution

1. Step 1: Write the proportion equation
   25,231.88 : 34,818.61 = 13,899.15 : x
2. Step 2: Convert to fraction form
   25,231.88/34,818.61 = 13,899.15/x
3. Step 3: Cross multiply
   25,231.88x = 34,818.61 × 13,899.15
4. Step 4: Simplify right side
   25,231.88x = 483,949,083.18
5. Step 5: Solve for x
   x = 483,949,083.18/25,231.88
6. Step 6: Final answer
   x = 19,180.06