Finding the Fourth Proportional to 23,738.48, 32,759.31 and 13,128.29

Step by Step Solution

1. Step 1: Write the proportion equation
   23,738.48 : 32,759.31 = 13,128.29 : x
2. Step 2: Convert to fraction form
   23,738.48/32,759.31 = 13,128.29/x
3. Step 3: Cross multiply
   23,738.48x = 32,759.31 × 13,128.29
4. Step 4: Simplify right side
   23,738.48x = 430,073,721.88
5. Step 5: Solve for x
   x = 430,073,721.88/23,738.48
6. Step 6: Final answer
   x = 18,117.16