Finding the Fourth Proportional to 3,942.45, 5,440.50 and 2,371.05

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.45 : 5,440.50 = 2,371.05 : x
2. Step 2: Convert to fraction form
   3,942.45/5,440.50 = 2,371.05/x
3. Step 3: Cross multiply
   3,942.45x = 5,440.50 × 2,371.05
4. Step 4: Simplify right side
   3,942.45x = 12,899,697.53
5. Step 5: Solve for x
   x = 12,899,697.53/3,942.45
6. Step 6: Final answer
   x = 3,272.00