Finding the Fourth Proportional to 3,651.96, 5,040.42 and 2,390.76

Step by Step Solution

1. Step 1: Write the proportion equation
   3,651.96 : 5,040.42 = 2,390.76 : x
2. Step 2: Convert to fraction form
   3,651.96/5,040.42 = 2,390.76/x
3. Step 3: Cross multiply
   3,651.96x = 5,040.42 × 2,390.76
4. Step 4: Simplify right side
   3,651.96x = 12,050,434.52
5. Step 5: Solve for x
   x = 12,050,434.52/3,651.96
6. Step 6: Final answer
   x = 3,299.72