Finding the Fourth Proportional to 6,303.61, 9,445.69 and 3,990.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,303.61 : 9,445.69 = 3,990.25 : x
2. Step 2: Convert to fraction form
   6,303.61/9,445.69 = 3,990.25/x
3. Step 3: Cross multiply
   6,303.61x = 9,445.69 × 3,990.25
4. Step 4: Simplify right side
   6,303.61x = 37,690,664.52
5. Step 5: Solve for x
   x = 37,690,664.52/6,303.61
6. Step 6: Final answer
   x = 5,979.22