Finding the Fourth Proportional to 6,479.72, 8,942.82 and 3,686.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,479.72 : 8,942.82 = 3,686.12 : x
2. Step 2: Convert to fraction form
   6,479.72/8,942.82 = 3,686.12/x
3. Step 3: Cross multiply
   6,479.72x = 8,942.82 × 3,686.12
4. Step 4: Simplify right side
   6,479.72x = 32,964,307.66
5. Step 5: Solve for x
   x = 32,964,307.66/6,479.72
6. Step 6: Final answer
   x = 5,087.30