Finding the Fourth Proportional to 5,003.28, 7,500.88 and 2,083.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,003.28 : 7,500.88 = 2,083.78 : x
2. Step 2: Convert to fraction form
   5,003.28/7,500.88 = 2,083.78/x
3. Step 3: Cross multiply
   5,003.28x = 7,500.88 × 2,083.78
4. Step 4: Simplify right side
   5,003.28x = 15,630,183.73
5. Step 5: Solve for x
   x = 15,630,183.73/5,003.28
6. Step 6: Final answer
   x = 3,123.99