Finding the Fourth Proportional to 8,141.69, 12,213.01 and 3,144.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,141.69 : 12,213.01 = 3,144.09 : x
2. Step 2: Convert to fraction form
   8,141.69/12,213.01 = 3,144.09/x
3. Step 3: Cross multiply
   8,141.69x = 12,213.01 × 3,144.09
4. Step 4: Simplify right side
   8,141.69x = 38,398,802.61
5. Step 5: Solve for x
   x = 38,398,802.61/8,141.69
6. Step 6: Final answer
   x = 4,716.32