Finding the Fourth Proportional to 10,308.28, 14,216.04 and 8,718.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,308.28 : 14,216.04 = 8,718.26 : x
2. Step 2: Convert to fraction form
   10,308.28/14,216.04 = 8,718.26/x
3. Step 3: Cross multiply
   10,308.28x = 14,216.04 × 8,718.26
4. Step 4: Simplify right side
   10,308.28x = 123,939,132.89
5. Step 5: Solve for x
   x = 123,939,132.89/10,308.28
6. Step 6: Final answer
   x = 12,023.26