Finding the Fourth Proportional to 11,908.78, 17,864.99 and 3,144.38

Step by Step Solution

1. Step 1: Write the proportion equation
   11,908.78 : 17,864.99 = 3,144.38 : x
2. Step 2: Convert to fraction form
   11,908.78/17,864.99 = 3,144.38/x
3. Step 3: Cross multiply
   11,908.78x = 17,864.99 × 3,144.38
4. Step 4: Simplify right side
   11,908.78x = 56,174,280.45
5. Step 5: Solve for x
   x = 56,174,280.45/11,908.78
6. Step 6: Final answer
   x = 4,717.05