Finding the Fourth Proportional to 10,331.54, 14,257.55 and 5,615.81

Step by Step Solution

1. Step 1: Write the proportion equation
   10,331.54 : 14,257.55 = 5,615.81 : x
2. Step 2: Convert to fraction form
   10,331.54/14,257.55 = 5,615.81/x
3. Step 3: Cross multiply
   10,331.54x = 14,257.55 × 5,615.81
4. Step 4: Simplify right side
   10,331.54x = 80,067,663.79
5. Step 5: Solve for x
   x = 80,067,663.79/10,331.54
6. Step 6: Final answer
   x = 7,749.83