Finding the Fourth Proportional to 3,974.38, 5,919.58 and 3,766.20

Step by Step Solution

1. Step 1: Write the proportion equation
   3,974.38 : 5,919.58 = 3,766.20 : x
2. Step 2: Convert to fraction form
   3,974.38/5,919.58 = 3,766.20/x
3. Step 3: Cross multiply
   3,974.38x = 5,919.58 × 3,766.20
4. Step 4: Simplify right side
   3,974.38x = 22,294,322.20
5. Step 5: Solve for x
   x = 22,294,322.20/3,974.38
6. Step 6: Final answer
   x = 5,609.51