Finding the Fourth Proportional to 11,975.48, 17,857.72 and 11,144.42

Step by Step Solution

1. Step 1: Write the proportion equation
   11,975.48 : 17,857.72 = 11,144.42 : x
2. Step 2: Convert to fraction form
   11,975.48/17,857.72 = 11,144.42/x
3. Step 3: Cross multiply
   11,975.48x = 17,857.72 × 11,144.42
4. Step 4: Simplify right side
   11,975.48x = 199,013,931.92
5. Step 5: Solve for x
   x = 199,013,931.92/11,975.48
6. Step 6: Final answer
   x = 16,618.45