Finding the Fourth Proportional to 25,111.97, 34,654.47 and 13,781.60

Step by Step Solution

1. Step 1: Write the proportion equation
   25,111.97 : 34,654.47 = 13,781.60 : x
2. Step 2: Convert to fraction form
   25,111.97/34,654.47 = 13,781.60/x
3. Step 3: Cross multiply
   25,111.97x = 34,654.47 × 13,781.60
4. Step 4: Simplify right side
   25,111.97x = 477,594,097.30
5. Step 5: Solve for x
   x = 477,594,097.30/25,111.97
6. Step 6: Final answer
   x = 19,018.58