Finding the Fourth Proportional to 8,139.62, 11,241.86 and 5,482.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,139.62 : 11,241.86 = 5,482.42 : x
2. Step 2: Convert to fraction form
   8,139.62/11,241.86 = 5,482.42/x
3. Step 3: Cross multiply
   8,139.62x = 11,241.86 × 5,482.42
4. Step 4: Simplify right side
   8,139.62x = 61,632,542.58
5. Step 5: Solve for x
   x = 61,632,542.58/8,139.62
6. Step 6: Final answer
   x = 7,571.92