Finding the Fourth Proportional to 8,141.78, 12,196.48 and 3,969.62

Step by Step Solution

1. Step 1: Write the proportion equation
   8,141.78 : 12,196.48 = 3,969.62 : x
2. Step 2: Convert to fraction form
   8,141.78/12,196.48 = 3,969.62/x
3. Step 3: Cross multiply
   8,141.78x = 12,196.48 × 3,969.62
4. Step 4: Simplify right side
   8,141.78x = 48,415,390.94
5. Step 5: Solve for x
   x = 48,415,390.94/8,141.78
6. Step 6: Final answer
   x = 5,946.54