Finding the Fourth Proportional to 2,661, 3,993.10 and 2,499

Step by Step Solution

1. Step 1: Write the proportion equation
   2,661 : 3,993.10 = 2,499 : x
2. Step 2: Convert to fraction form
   2,661/3,993.10 = 2,499/x
3. Step 3: Cross multiply
   2,661x = 3,993.10 × 2,499
4. Step 4: Simplify right side
   2,661x = 9,978,756.90
5. Step 5: Solve for x
   x = 9,978,756.90/2,661
6. Step 6: Final answer
   x = 3,750.00