Finding the Fourth Proportional to 25,018.58, 34,525.35 and 13,687.94

Step by Step Solution

1. Step 1: Write the proportion equation
   25,018.58 : 34,525.35 = 13,687.94 : x
2. Step 2: Convert to fraction form
   25,018.58/34,525.35 = 13,687.94/x
3. Step 3: Cross multiply
   25,018.58x = 34,525.35 × 13,687.94
4. Step 4: Simplify right side
   25,018.58x = 472,581,005.59
5. Step 5: Solve for x
   x = 472,581,005.59/25,018.58
6. Step 6: Final answer
   x = 18,889.20