Finding the Fourth Proportional to 5,730.72, 8,578.78 and 5,183.16

Step by Step Solution

1. Step 1: Write the proportion equation
   5,730.72 : 8,578.78 = 5,183.16 : x
2. Step 2: Convert to fraction form
   5,730.72/8,578.78 = 5,183.16/x
3. Step 3: Cross multiply
   5,730.72x = 8,578.78 × 5,183.16
4. Step 4: Simplify right side
   5,730.72x = 44,465,189.34
5. Step 5: Solve for x
   x = 44,465,189.34/5,730.72
6. Step 6: Final answer
   x = 7,759.09