Finding the Fourth Proportional to 11,144.86, 16,601.18 and 10,553.22

Step by Step Solution

1. Step 1: Write the proportion equation
   11,144.86 : 16,601.18 = 10,553.22 : x
2. Step 2: Convert to fraction form
   11,144.86/16,601.18 = 10,553.22/x
3. Step 3: Cross multiply
   11,144.86x = 16,601.18 × 10,553.22
4. Step 4: Simplify right side
   11,144.86x = 175,195,769.03
5. Step 5: Solve for x
   x = 175,195,769.03/11,144.86
6. Step 6: Final answer
   x = 15,719.87