Finding the Fourth Proportional to 8,375.32, 12,543.54 and 8,083.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,375.32 : 12,543.54 = 8,083.72 : x
2. Step 2: Convert to fraction form
   8,375.32/12,543.54 = 8,083.72/x
3. Step 3: Cross multiply
   8,375.32x = 12,543.54 × 8,083.72
4. Step 4: Simplify right side
   8,375.32x = 101,398,465.17
5. Step 5: Solve for x
   x = 101,398,465.17/8,375.32
6. Step 6: Final answer
   x = 12,106.82