Finding the Fourth Proportional to 23,589.24, 32,552.48 and 12,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,589.24 : 32,552.48 = 12,978.88 : x
2. Step 2: Convert to fraction form
   23,589.24/32,552.48 = 12,978.88/x
3. Step 3: Cross multiply
   23,589.24x = 32,552.48 × 12,978.88
4. Step 4: Simplify right side
   23,589.24x = 422,494,731.62
5. Step 5: Solve for x
   x = 422,494,731.62/23,589.24
6. Step 6: Final answer
   x = 17,910.49