Finding the Fourth Proportional to 6,403.37, 8,836.31 and 3,608.69

Step by Step Solution

1. Step 1: Write the proportion equation
   6,403.37 : 8,836.31 = 3,608.69 : x
2. Step 2: Convert to fraction form
   6,403.37/8,836.31 = 3,608.69/x
3. Step 3: Cross multiply
   6,403.37x = 8,836.31 × 3,608.69
4. Step 4: Simplify right side
   6,403.37x = 31,887,472.42
5. Step 5: Solve for x
   x = 31,887,472.42/6,403.37
6. Step 6: Final answer
   x = 4,979.80