Finding the Fourth Proportional to 10,089.13, 15,101.34 and 5,397.40

Step by Step Solution

1. Step 1: Write the proportion equation
   10,089.13 : 15,101.34 = 5,397.40 : x
2. Step 2: Convert to fraction form
   10,089.13/15,101.34 = 5,397.40/x
3. Step 3: Cross multiply
   10,089.13x = 15,101.34 × 5,397.40
4. Step 4: Simplify right side
   10,089.13x = 81,507,972.52
5. Step 5: Solve for x
   x = 81,507,972.52/10,089.13
6. Step 6: Final answer
   x = 8,078.79