Finding the Fourth Proportional to 11,525.31, 15,912.72 and 8,704.08

Step by Step Solution

1. Step 1: Write the proportion equation
   11,525.31 : 15,912.72 = 8,704.08 : x
2. Step 2: Convert to fraction form
   11,525.31/15,912.72 = 8,704.08/x
3. Step 3: Cross multiply
   11,525.31x = 15,912.72 × 8,704.08
4. Step 4: Simplify right side
   11,525.31x = 138,505,587.90
5. Step 5: Solve for x
   x = 138,505,587.90/11,525.31
6. Step 6: Final answer
   x = 12,017.52