Finding the Fourth Proportional to 17,142.19, 25,711.35 and 8,134.18

Step by Step Solution

1. Step 1: Write the proportion equation
   17,142.19 : 25,711.35 = 8,134.18 : x
2. Step 2: Convert to fraction form
   17,142.19/25,711.35 = 8,134.18/x
3. Step 3: Cross multiply
   17,142.19x = 25,711.35 × 8,134.18
4. Step 4: Simplify right side
   17,142.19x = 209,140,748.94
5. Step 5: Solve for x
   x = 209,140,748.94/17,142.19
6. Step 6: Final answer
   x = 12,200.35