Finding the Fourth Proportional to 12,494.39, 17,239.43 and 7,459.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,494.39 : 17,239.43 = 7,459.43 : x
2. Step 2: Convert to fraction form
   12,494.39/17,239.43 = 7,459.43/x
3. Step 3: Cross multiply
   12,494.39x = 17,239.43 × 7,459.43
4. Step 4: Simplify right side
   12,494.39x = 128,596,253.78
5. Step 5: Solve for x
   x = 128,596,253.78/12,494.39
6. Step 6: Final answer
   x = 10,292.32