Finding the Fourth Proportional to 3,924.80, 5,871.39 and 3,383.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,924.80 : 5,871.39 = 3,383.72 : x
2. Step 2: Convert to fraction form
   3,924.80/5,871.39 = 3,383.72/x
3. Step 3: Cross multiply
   3,924.80x = 5,871.39 × 3,383.72
4. Step 4: Simplify right side
   3,924.80x = 19,867,139.77
5. Step 5: Solve for x
   x = 19,867,139.77/3,924.80
6. Step 6: Final answer
   x = 5,061.95