Finding the Fourth Proportional to 6,648.83, 9,172.82 and 3,815.18

Step by Step Solution

1. Step 1: Write the proportion equation
   6,648.83 : 9,172.82 = 3,815.18 : x
2. Step 2: Convert to fraction form
   6,648.83/9,172.82 = 3,815.18/x
3. Step 3: Cross multiply
   6,648.83x = 9,172.82 × 3,815.18
4. Step 4: Simplify right side
   6,648.83x = 34,995,998.35
5. Step 5: Solve for x
   x = 34,995,998.35/6,648.83
6. Step 6: Final answer
   x = 5,263.48