Finding the Fourth Proportional to 23,740.69, 32,759.31 and 13,128.88

Step by Step Solution

1. Step 1: Write the proportion equation
   23,740.69 : 32,759.31 = 13,128.88 : x
2. Step 2: Convert to fraction form
   23,740.69/32,759.31 = 13,128.88/x
3. Step 3: Cross multiply
   23,740.69x = 32,759.31 × 13,128.88
4. Step 4: Simplify right side
   23,740.69x = 430,093,049.87
5. Step 5: Solve for x
   x = 430,093,049.87/23,740.69
6. Step 6: Final answer
   x = 18,116.28