Finding the Fourth Proportional to 12,396.38, 17,100.05 and 7,355.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,396.38 : 17,100.05 = 7,355.61 : x
2. Step 2: Convert to fraction form
   12,396.38/17,100.05 = 7,355.61/x
3. Step 3: Cross multiply
   12,396.38x = 17,100.05 × 7,355.61
4. Step 4: Simplify right side
   12,396.38x = 125,781,262.00
5. Step 5: Solve for x
   x = 125,781,262.00/12,396.38
6. Step 6: Final answer
   x = 10,146.62