Finding the Fourth Proportional to 10,399.12, 15,604.82 and 5,469.14

Step by Step Solution

1. Step 1: Write the proportion equation
   10,399.12 : 15,604.82 = 5,469.14 : x
2. Step 2: Convert to fraction form
   10,399.12/15,604.82 = 5,469.14/x
3. Step 3: Cross multiply
   10,399.12x = 15,604.82 × 5,469.14
4. Step 4: Simplify right side
   10,399.12x = 85,344,839.89
5. Step 5: Solve for x
   x = 85,344,839.89/10,399.12
6. Step 6: Final answer
   x = 8,206.93