Finding the Fourth Proportional to 10,089, 15,101.15 and 5,397.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089 : 15,101.15 = 5,397.28 : x
2. Step 2: Convert to fraction form
   10,089/15,101.15 = 5,397.28/x
3. Step 3: Cross multiply
   10,089x = 15,101.15 × 5,397.28
4. Step 4: Simplify right side
   10,089x = 81,505,134.87
5. Step 5: Solve for x
   x = 81,505,134.87/10,089
6. Step 6: Final answer
   x = 8,078.61