Finding the Fourth Proportional to 10,672.57, 14,728.31 and 5,957.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,672.57 : 14,728.31 = 5,957.21 : x
2. Step 2: Convert to fraction form
   10,672.57/14,728.31 = 5,957.21/x
3. Step 3: Cross multiply
   10,672.57x = 14,728.31 × 5,957.21
4. Step 4: Simplify right side
   10,672.57x = 87,739,605.83
5. Step 5: Solve for x
   x = 87,739,605.83/10,672.57
6. Step 6: Final answer
   x = 8,221.04