Finding the Fourth Proportional to 5,229.18, 7,216.32 and 2,871.42

Step by Step Solution

1. Step 1: Write the proportion equation
   5,229.18 : 7,216.32 = 2,871.42 : x
2. Step 2: Convert to fraction form
   5,229.18/7,216.32 = 2,871.42/x
3. Step 3: Cross multiply
   5,229.18x = 7,216.32 × 2,871.42
4. Step 4: Simplify right side
   5,229.18x = 20,721,085.57
5. Step 5: Solve for x
   x = 20,721,085.57/5,229.18
6. Step 6: Final answer
   x = 3,962.59