Finding the Fourth Proportional to 5,734.52, 7,911.72 and 3,216.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,734.52 : 7,911.72 = 3,216.20 : x
2. Step 2: Convert to fraction form
   5,734.52/7,911.72 = 3,216.20/x
3. Step 3: Cross multiply
   5,734.52x = 7,911.72 × 3,216.20
4. Step 4: Simplify right side
   5,734.52x = 25,445,673.86
5. Step 5: Solve for x
   x = 25,445,673.86/5,734.52
6. Step 6: Final answer
   x = 4,437.28