Finding the Fourth Proportional to 23,500.72, 32,431.26 and 12,891.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,500.72 : 32,431.26 = 12,891.52 : x
2. Step 2: Convert to fraction form
   23,500.72/32,431.26 = 12,891.52/x
3. Step 3: Cross multiply
   23,500.72x = 32,431.26 × 12,891.52
4. Step 4: Simplify right side
   23,500.72x = 418,088,236.92
5. Step 5: Solve for x
   x = 418,088,236.92/23,500.72
6. Step 6: Final answer
   x = 17,790.44