Finding the Fourth Proportional to 8,196.16, 12,268.80 and 5,277.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,196.16 : 12,268.80 = 5,277.12 : x
2. Step 2: Convert to fraction form
   8,196.16/12,268.80 = 5,277.12/x
3. Step 3: Cross multiply
   8,196.16x = 12,268.80 × 5,277.12
4. Step 4: Simplify right side
   8,196.16x = 64,743,929.86
5. Step 5: Solve for x
   x = 64,743,929.86/8,196.16
6. Step 6: Final answer
   x = 7,899.30