Finding the Fourth Proportional to 3,942.34, 5,424.33 and 3,231.56

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.34 : 5,424.33 = 3,231.56 : x
2. Step 2: Convert to fraction form
   3,942.34/5,424.33 = 3,231.56/x
3. Step 3: Cross multiply
   3,942.34x = 5,424.33 × 3,231.56
4. Step 4: Simplify right side
   3,942.34x = 17,529,073.53
5. Step 5: Solve for x
   x = 17,529,073.53/3,942.34
6. Step 6: Final answer
   x = 4,446.37