Finding the Fourth Proportional to 23,499.92, 32,429.72 and 12,889.48

Step by Step Solution

1. Step 1: Write the proportion equation
   23,499.92 : 32,429.72 = 12,889.48 : x
2. Step 2: Convert to fraction form
   23,499.92/32,429.72 = 12,889.48/x
3. Step 3: Cross multiply
   23,499.92x = 32,429.72 × 12,889.48
4. Step 4: Simplify right side
   23,499.92x = 418,002,166.80
5. Step 5: Solve for x
   x = 418,002,166.80/23,499.92
6. Step 6: Final answer
   x = 17,787.38