Finding the Fourth Proportional to 5,686.20, 8,514.72 and 3,956.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,686.20 : 8,514.72 = 3,956.04 : x
2. Step 2: Convert to fraction form
   5,686.20/8,514.72 = 3,956.04/x
3. Step 3: Cross multiply
   5,686.20x = 8,514.72 × 3,956.04
4. Step 4: Simplify right side
   5,686.20x = 33,684,572.91
5. Step 5: Solve for x
   x = 33,684,572.91/5,686.20
6. Step 6: Final answer
   x = 5,923.92