Finding the Fourth Proportional to 12,338.32, 17,017.28 and 8,084.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,338.32 : 17,017.28 = 8,084.72 : x
2. Step 2: Convert to fraction form
   12,338.32/17,017.28 = 8,084.72/x
3. Step 3: Cross multiply
   12,338.32x = 17,017.28 × 8,084.72
4. Step 4: Simplify right side
   12,338.32x = 137,579,943.96
5. Step 5: Solve for x
   x = 137,579,943.96/12,338.32
6. Step 6: Final answer
   x = 11,150.62