Finding the Fourth Proportional to 6,309.12, 8,706.72 and 3,514.80

Step by Step Solution

1. Step 1: Write the proportion equation
   6,309.12 : 8,706.72 = 3,514.80 : x
2. Step 2: Convert to fraction form
   6,309.12/8,706.72 = 3,514.80/x
3. Step 3: Cross multiply
   6,309.12x = 8,706.72 × 3,514.80
4. Step 4: Simplify right side
   6,309.12x = 30,602,379.46
5. Step 5: Solve for x
   x = 30,602,379.46/6,309.12
6. Step 6: Final answer
   x = 4,850.50