Finding the Fourth Proportional to 8,196.78, 11,311.53 and 4,470.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,196.78 : 11,311.53 = 4,470.78 : x
2. Step 2: Convert to fraction form
   8,196.78/11,311.53 = 4,470.78/x
3. Step 3: Cross multiply
   8,196.78x = 11,311.53 × 4,470.78
4. Step 4: Simplify right side
   8,196.78x = 50,571,362.09
5. Step 5: Solve for x
   x = 50,571,362.09/8,196.78
6. Step 6: Final answer
   x = 6,169.66