Finding the Fourth Proportional to 10,331.48, 14,257.38 and 5,615.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,331.48 : 14,257.38 = 5,615.72 : x
2. Step 2: Convert to fraction form
   10,331.48/14,257.38 = 5,615.72/x
3. Step 3: Cross multiply
   10,331.48x = 14,257.38 × 5,615.72
4. Step 4: Simplify right side
   10,331.48x = 80,065,454.01
5. Step 5: Solve for x
   x = 80,065,454.01/10,331.48
6. Step 6: Final answer
   x = 7,749.66