Finding the Fourth Proportional to 12,426.79, 17,146.61 and 7,392.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.79 : 17,146.61 = 7,392.29 : x
2. Step 2: Convert to fraction form
   12,426.79/17,146.61 = 7,392.29/x
3. Step 3: Cross multiply
   12,426.79x = 17,146.61 × 7,392.29
4. Step 4: Simplify right side
   12,426.79x = 126,752,687.68
5. Step 5: Solve for x
   x = 126,752,687.68/12,426.79
6. Step 6: Final answer
   x = 10,199.95