Finding the Fourth Proportional to 5,785.56, 7,974.72 and 3,686.04

Step by Step Solution

1. Step 1: Write the proportion equation
   5,785.56 : 7,974.72 = 3,686.04 : x
2. Step 2: Convert to fraction form
   5,785.56/7,974.72 = 3,686.04/x
3. Step 3: Cross multiply
   5,785.56x = 7,974.72 × 3,686.04
4. Step 4: Simplify right side
   5,785.56x = 29,395,136.91
5. Step 5: Solve for x
   x = 29,395,136.91/5,785.56
6. Step 6: Final answer
   x = 5,080.78