Finding the Fourth Proportional to 5,839.36, 8,759.31 and 2,139.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,839.36 : 8,759.31 = 2,139.82 : x
2. Step 2: Convert to fraction form
   5,839.36/8,759.31 = 2,139.82/x
3. Step 3: Cross multiply
   5,839.36x = 8,759.31 × 2,139.82
4. Step 4: Simplify right side
   5,839.36x = 18,743,346.72
5. Step 5: Solve for x
   x = 18,743,346.72/5,839.36
6. Step 6: Final answer
   x = 3,209.83