Finding the Fourth Proportional to 12,434.50, 17,159.61 and 7,131.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,434.50 : 17,159.61 = 7,131.07 : x
2. Step 2: Convert to fraction form
   12,434.50/17,159.61 = 7,131.07/x
3. Step 3: Cross multiply
   12,434.50x = 17,159.61 × 7,131.07
4. Step 4: Simplify right side
   12,434.50x = 122,366,380.08
5. Step 5: Solve for x
   x = 122,366,380.08/12,434.50
6. Step 6: Final answer
   x = 9,840.88