Finding the Fourth Proportional to 17,152.86, 25,695.99 and 12,641.72

Step by Step Solution

1. Step 1: Write the proportion equation
   17,152.86 : 25,695.99 = 12,641.72 : x
2. Step 2: Convert to fraction form
   17,152.86/25,695.99 = 12,641.72/x
3. Step 3: Cross multiply
   17,152.86x = 25,695.99 × 12,641.72
4. Step 4: Simplify right side
   17,152.86x = 324,841,510.70
5. Step 5: Solve for x
   x = 324,841,510.70/17,152.86
6. Step 6: Final answer
   x = 18,938.04