Finding the Fourth Proportional to 3,963.98, 5,973.18 and 3,285.86

Step by Step Solution

1. Step 1: Write the proportion equation
   3,963.98 : 5,973.18 = 3,285.86 : x
2. Step 2: Convert to fraction form
   3,963.98/5,973.18 = 3,285.86/x
3. Step 3: Cross multiply
   3,963.98x = 5,973.18 × 3,285.86
4. Step 4: Simplify right side
   3,963.98x = 19,627,003.37
5. Step 5: Solve for x
   x = 19,627,003.37/3,963.98
6. Step 6: Final answer
   x = 4,951.34