Finding the Fourth Proportional to 3,983.38, 5,499.39 and 2,920.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,983.38 : 5,499.39 = 2,920.25 : x
2. Step 2: Convert to fraction form
   3,983.38/5,499.39 = 2,920.25/x
3. Step 3: Cross multiply
   3,983.38x = 5,499.39 × 2,920.25
4. Step 4: Simplify right side
   3,983.38x = 16,059,618.35
5. Step 5: Solve for x
   x = 16,059,618.35/3,983.38
6. Step 6: Final answer
   x = 4,031.66