Finding the Fourth Proportional to 23,697.28, 32,700.72 and 13,086.28

Step by Step Solution

1. Step 1: Write the proportion equation
   23,697.28 : 32,700.72 = 13,086.28 : x
2. Step 2: Convert to fraction form
   23,697.28/32,700.72 = 13,086.28/x
3. Step 3: Cross multiply
   23,697.28x = 32,700.72 × 13,086.28
4. Step 4: Simplify right side
   23,697.28x = 427,930,778.12
5. Step 5: Solve for x
   x = 427,930,778.12/23,697.28
6. Step 6: Final answer
   x = 18,058.22