Finding the Fourth Proportional to 6,293.71, 8,685.35 and 3,499.21

Step by Step Solution

1. Step 1: Write the proportion equation
   6,293.71 : 8,685.35 = 3,499.21 : x
2. Step 2: Convert to fraction form
   6,293.71/8,685.35 = 3,499.21/x
3. Step 3: Cross multiply
   6,293.71x = 8,685.35 × 3,499.21
4. Step 4: Simplify right side
   6,293.71x = 30,391,863.57
5. Step 5: Solve for x
   x = 30,391,863.57/6,293.71
6. Step 6: Final answer
   x = 4,828.93