Finding the Fourth Proportional to 6,309.72, 8,707.40 and 3,476.88

Step by Step Solution

1. Step 1: Write the proportion equation
   6,309.72 : 8,707.40 = 3,476.88 : x
2. Step 2: Convert to fraction form
   6,309.72/8,707.40 = 3,476.88/x
3. Step 3: Cross multiply
   6,309.72x = 8,707.40 × 3,476.88
4. Step 4: Simplify right side
   6,309.72x = 30,274,584.91
5. Step 5: Solve for x
   x = 30,274,584.91/6,309.72
6. Step 6: Final answer
   x = 4,798.09