Finding the Fourth Proportional to 10,328.80, 14,253.43 and 5,613.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,328.80 : 14,253.43 = 5,613.09 : x
2. Step 2: Convert to fraction form
   10,328.80/14,253.43 = 5,613.09/x
3. Step 3: Cross multiply
   10,328.80x = 14,253.43 × 5,613.09
4. Step 4: Simplify right side
   10,328.80x = 80,005,785.40
5. Step 5: Solve for x
   x = 80,005,785.40/10,328.80
6. Step 6: Final answer
   x = 7,745.89