Finding the Fourth Proportional to 8,196.20, 12,296.10 and 2,648.60

Step by Step Solution

1. Step 1: Write the proportion equation
   8,196.20 : 12,296.10 = 2,648.60 : x
2. Step 2: Convert to fraction form
   8,196.20/12,296.10 = 2,648.60/x
3. Step 3: Cross multiply
   8,196.20x = 12,296.10 × 2,648.60
4. Step 4: Simplify right side
   8,196.20x = 32,567,450.46
5. Step 5: Solve for x
   x = 32,567,450.46/8,196.20
6. Step 6: Final answer
   x = 3,973.48