Finding the Fourth Proportional to 25,111.88, 34,653.24 and 13,781.12

Step by Step Solution

1. Step 1: Write the proportion equation
   25,111.88 : 34,653.24 = 13,781.12 : x
2. Step 2: Convert to fraction form
   25,111.88/34,653.24 = 13,781.12/x
3. Step 3: Cross multiply
   25,111.88x = 34,653.24 × 13,781.12
4. Step 4: Simplify right side
   25,111.88x = 477,560,458.83
5. Step 5: Solve for x
   x = 477,560,458.83/25,111.88
6. Step 6: Final answer
   x = 19,017.31