Finding the Fourth Proportional to 3,982.81, 5,521.82 and 3,761.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,982.81 : 5,521.82 = 3,761.37 : x
2. Step 2: Convert to fraction form
   3,982.81/5,521.82 = 3,761.37/x
3. Step 3: Cross multiply
   3,982.81x = 5,521.82 × 3,761.37
4. Step 4: Simplify right side
   3,982.81x = 20,769,645.64
5. Step 5: Solve for x
   x = 20,769,645.64/3,982.81
6. Step 6: Final answer
   x = 5,214.82