Finding the Fourth Proportional to 23,718.54, 32,729 and 13,106.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,718.54 : 32,729 = 13,106.72 : x
2. Step 2: Convert to fraction form
   23,718.54/32,729 = 13,106.72/x
3. Step 3: Cross multiply
   23,718.54x = 32,729 × 13,106.72
4. Step 4: Simplify right side
   23,718.54x = 428,969,838.88
5. Step 5: Solve for x
   x = 428,969,838.88/23,718.54
6. Step 6: Final answer
   x = 18,085.85