Finding the Fourth Proportional to 3,942.04, 5,439.98 and 2,263.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.04 : 5,439.98 = 2,263.72 : x
2. Step 2: Convert to fraction form
   3,942.04/5,439.98 = 2,263.72/x
3. Step 3: Cross multiply
   3,942.04x = 5,439.98 × 2,263.72
4. Step 4: Simplify right side
   3,942.04x = 12,314,591.53
5. Step 5: Solve for x
   x = 12,314,591.53/3,942.04
6. Step 6: Final answer
   x = 3,123.91