Finding the Fourth Proportional to 4,081.92, 5,636.16 and 2,686.56

Step by Step Solution

1. Step 1: Write the proportion equation
   4,081.92 : 5,636.16 = 2,686.56 : x
2. Step 2: Convert to fraction form
   4,081.92/5,636.16 = 2,686.56/x
3. Step 3: Cross multiply
   4,081.92x = 5,636.16 × 2,686.56
4. Step 4: Simplify right side
   4,081.92x = 15,141,882.01
5. Step 5: Solve for x
   x = 15,141,882.01/4,081.92
6. Step 6: Final answer
   x = 3,709.50