Finding the Fourth Proportional to 3,942.42, 5,440.56 and 2,174.01

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.42 : 5,440.56 = 2,174.01 : x
2. Step 2: Convert to fraction form
   3,942.42/5,440.56 = 2,174.01/x
3. Step 3: Cross multiply
   3,942.42x = 5,440.56 × 2,174.01
4. Step 4: Simplify right side
   3,942.42x = 11,827,831.85
5. Step 5: Solve for x
   x = 11,827,831.85/3,942.42
6. Step 6: Final answer
   x = 3,000.15