Finding the Fourth Proportional to 8,813.29, 12,158.15 and 5,275.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,813.29 : 12,158.15 = 5,275.82 : x
2. Step 2: Convert to fraction form
   8,813.29/12,158.15 = 5,275.82/x
3. Step 3: Cross multiply
   8,813.29x = 12,158.15 × 5,275.82
4. Step 4: Simplify right side
   8,813.29x = 64,144,123.76
5. Step 5: Solve for x
   x = 64,144,123.76/8,813.29
6. Step 6: Final answer
   x = 7,278.12