Finding the Fourth Proportional to 23,507.15, 32,439.28 and 13,158.75

Step by Step Solution

1. Step 1: Write the proportion equation
   23,507.15 : 32,439.28 = 13,158.75 : x
2. Step 2: Convert to fraction form
   23,507.15/32,439.28 = 13,158.75/x
3. Step 3: Cross multiply
   23,507.15x = 32,439.28 × 13,158.75
4. Step 4: Simplify right side
   23,507.15x = 426,860,375.70
5. Step 5: Solve for x
   x = 426,860,375.70/23,507.15
6. Step 6: Final answer
   x = 18,158.75