Finding the Fourth Proportional to 10,331.04, 14,256.72 and 5,615.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,331.04 : 14,256.72 = 5,615.40 : x
2. Step 2: Convert to fraction form
   10,331.04/14,256.72 = 5,615.40/x
3. Step 3: Cross multiply
   10,331.04x = 14,256.72 × 5,615.40
4. Step 4: Simplify right side
   10,331.04x = 80,057,185.49
5. Step 5: Solve for x
   x = 80,057,185.49/10,331.04
6. Step 6: Final answer
   x = 7,749.19