Finding the Fourth Proportional to 17,698.72, 24,382.32 and 15,172.48

Step by Step Solution

1. Step 1: Write the proportion equation
   17,698.72 : 24,382.32 = 15,172.48 : x
2. Step 2: Convert to fraction form
   17,698.72/24,382.32 = 15,172.48/x
3. Step 3: Cross multiply
   17,698.72x = 24,382.32 × 15,172.48
4. Step 4: Simplify right side
   17,698.72x = 369,940,262.55
5. Step 5: Solve for x
   x = 369,940,262.55/17,698.72
6. Step 6: Final answer
   x = 20,902.09