Finding the Fourth Proportional to 6,308.31, 8,705.47 and 3,513.81

Step by Step Solution

1. Step 1: Write the proportion equation
   6,308.31 : 8,705.47 = 3,513.81 : x
2. Step 2: Convert to fraction form
   6,308.31/8,705.47 = 3,513.81/x
3. Step 3: Cross multiply
   6,308.31x = 8,705.47 × 3,513.81
4. Step 4: Simplify right side
   6,308.31x = 30,589,367.54
5. Step 5: Solve for x
   x = 30,589,367.54/6,308.31
6. Step 6: Final answer
   x = 4,849.06