Finding the Fourth Proportional to 6,442.83, 9,663.71 and 3,321.15

Step by Step Solution

1. Step 1: Write the proportion equation
   6,442.83 : 9,663.71 = 3,321.15 : x
2. Step 2: Convert to fraction form
   6,442.83/9,663.71 = 3,321.15/x
3. Step 3: Cross multiply
   6,442.83x = 9,663.71 × 3,321.15
4. Step 4: Simplify right side
   6,442.83x = 32,094,613.86
5. Step 5: Solve for x
   x = 32,094,613.86/6,442.83
6. Step 6: Final answer
   x = 4,981.45