Finding the Fourth Proportional to 23,499.72, 32,429.88 and 12,890.52

Step by Step Solution

1. Step 1: Write the proportion equation
   23,499.72 : 32,429.88 = 12,890.52 : x
2. Step 2: Convert to fraction form
   23,499.72/32,429.88 = 12,890.52/x
3. Step 3: Cross multiply
   23,499.72x = 32,429.88 × 12,890.52
4. Step 4: Simplify right side
   23,499.72x = 418,038,016.74
5. Step 5: Solve for x
   x = 418,038,016.74/23,499.72
6. Step 6: Final answer
   x = 17,789.06