Finding the Fourth Proportional to 12,382.56, 17,111.28 and 9,393.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,382.56 : 17,111.28 = 9,393.04 : x
2. Step 2: Convert to fraction form
   12,382.56/17,111.28 = 9,393.04/x
3. Step 3: Cross multiply
   12,382.56x = 17,111.28 × 9,393.04
4. Step 4: Simplify right side
   12,382.56x = 160,726,937.49
5. Step 5: Solve for x
   x = 160,726,937.49/12,382.56
6. Step 6: Final answer
   x = 12,980.11