Finding the Fourth Proportional to 17,126, 25,694.18 and 12,138.02

Step by Step Solution

1. Step 1: Write the proportion equation
   17,126 : 25,694.18 = 12,138.02 : x
2. Step 2: Convert to fraction form
   17,126/25,694.18 = 12,138.02/x
3. Step 3: Cross multiply
   17,126x = 25,694.18 × 12,138.02
4. Step 4: Simplify right side
   17,126x = 311,876,470.72
5. Step 5: Solve for x
   x = 311,876,470.72/17,126
6. Step 6: Final answer
   x = 18,210.70