Finding the Fourth Proportional to 6,648.96, 9,176.76 and 3,996.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,648.96 : 9,176.76 = 3,996.72 : x
2. Step 2: Convert to fraction form
   6,648.96/9,176.76 = 3,996.72/x
3. Step 3: Cross multiply
   6,648.96x = 9,176.76 × 3,996.72
4. Step 4: Simplify right side
   6,648.96x = 36,676,940.23
5. Step 5: Solve for x
   x = 36,676,940.23/6,648.96
6. Step 6: Final answer
   x = 5,516.19