Finding the Fourth Proportional to 3,982.97, 5,986.61 and 3,889.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,982.97 : 5,986.61 = 3,889.42 : x
2. Step 2: Convert to fraction form
   3,982.97/5,986.61 = 3,889.42/x
3. Step 3: Cross multiply
   3,982.97x = 5,986.61 × 3,889.42
4. Step 4: Simplify right side
   3,982.97x = 23,284,420.84
5. Step 5: Solve for x
   x = 23,284,420.84/3,982.97
6. Step 6: Final answer
   x = 5,845.99