Finding the Fourth Proportional to 3,942.34, 5,443.71 and 3,521.95

Step by Step Solution

1. Step 1: Write the proportion equation
   3,942.34 : 5,443.71 = 3,521.95 : x
2. Step 2: Convert to fraction form
   3,942.34/5,443.71 = 3,521.95/x
3. Step 3: Cross multiply
   3,942.34x = 5,443.71 × 3,521.95
4. Step 4: Simplify right side
   3,942.34x = 19,172,447.62
5. Step 5: Solve for x
   x = 19,172,447.62/3,942.34
6. Step 6: Final answer
   x = 4,863.22