Finding the Fourth Proportional to 23,557.85, 32,509.92 and 12,947.25

Step by Step Solution

1. Step 1: Write the proportion equation
   23,557.85 : 32,509.92 = 12,947.25 : x
2. Step 2: Convert to fraction form
   23,557.85/32,509.92 = 12,947.25/x
3. Step 3: Cross multiply
   23,557.85x = 32,509.92 × 12,947.25
4. Step 4: Simplify right side
   23,557.85x = 420,914,061.72
5. Step 5: Solve for x
   x = 420,914,061.72/23,557.85
6. Step 6: Final answer
   x = 17,867.25