Finding the Fourth Proportional to 6,308.57, 8,705.72 and 3,476.21

Step by Step Solution

1. Step 1: Write the proportion equation
   6,308.57 : 8,705.72 = 3,476.21 : x
2. Step 2: Convert to fraction form
   6,308.57/8,705.72 = 3,476.21/x
3. Step 3: Cross multiply
   6,308.57x = 8,705.72 × 3,476.21
4. Step 4: Simplify right side
   6,308.57x = 30,262,910.92
5. Step 5: Solve for x
   x = 30,262,910.92/6,308.57
6. Step 6: Final answer
   x = 4,797.11