Finding the Fourth Proportional to 11,644.29, 17,387.23 and 10,986.52

Step by Step Solution

1. Step 1: Write the proportion equation
   11,644.29 : 17,387.23 = 10,986.52 : x
2. Step 2: Convert to fraction form
   11,644.29/17,387.23 = 10,986.52/x
3. Step 3: Cross multiply
   11,644.29x = 17,387.23 × 10,986.52
4. Step 4: Simplify right side
   11,644.29x = 191,025,150.14
5. Step 5: Solve for x
   x = 191,025,150.14/11,644.29
6. Step 6: Final answer
   x = 16,405.05