Finding the Fourth Proportional to 8,081.47, 12,123.42 and 2,886.13

Step by Step Solution

1. Step 1: Write the proportion equation
   8,081.47 : 12,123.42 = 2,886.13 : x
2. Step 2: Convert to fraction form
   8,081.47/12,123.42 = 2,886.13/x
3. Step 3: Cross multiply
   8,081.47x = 12,123.42 × 2,886.13
4. Step 4: Simplify right side
   8,081.47x = 34,989,691.12
5. Step 5: Solve for x
   x = 34,989,691.12/8,081.47
6. Step 6: Final answer
   x = 4,329.62