Finding the Fourth Proportional to 10,673.10, 16,089.71 and 9,959.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,673.10 : 16,089.71 = 9,959.49 : x
2. Step 2: Convert to fraction form
   10,673.10/16,089.71 = 9,959.49/x
3. Step 3: Cross multiply
   10,673.10x = 16,089.71 × 9,959.49
4. Step 4: Simplify right side
   10,673.10x = 160,245,256.05
5. Step 5: Solve for x
   x = 160,245,256.05/10,673.10
6. Step 6: Final answer
   x = 15,013.94