Finding the Fourth Proportional to 10,331.42, 14,257.32 and 5,615.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,331.42 : 14,257.32 = 5,615.78 : x
2. Step 2: Convert to fraction form
   10,331.42/14,257.32 = 5,615.78/x
3. Step 3: Cross multiply
   10,331.42x = 14,257.32 × 5,615.78
4. Step 4: Simplify right side
   10,331.42x = 80,065,972.51
5. Step 5: Solve for x
   x = 80,065,972.51/10,331.42
6. Step 6: Final answer
   x = 7,749.75