Finding the Fourth Proportional to 8,132.78, 12,196.25 and 3,453.11

Step by Step Solution

1. Step 1: Write the proportion equation
   8,132.78 : 12,196.25 = 3,453.11 : x
2. Step 2: Convert to fraction form
   8,132.78/12,196.25 = 3,453.11/x
3. Step 3: Cross multiply
   8,132.78x = 12,196.25 × 3,453.11
4. Step 4: Simplify right side
   8,132.78x = 42,114,914.59
5. Step 5: Solve for x
   x = 42,114,914.59/8,132.78
6. Step 6: Final answer
   x = 5,178.42