Finding the Fourth Proportional to 12,398.15, 17,118.29 and 7,624.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,398.15 : 17,118.29 = 7,624.46 : x
2. Step 2: Convert to fraction form
   12,398.15/17,118.29 = 7,624.46/x
3. Step 3: Cross multiply
   12,398.15x = 17,118.29 × 7,624.46
4. Step 4: Simplify right side
   12,398.15x = 130,517,593.66
5. Step 5: Solve for x
   x = 130,517,593.66/12,398.15
6. Step 6: Final answer
   x = 10,527.19