Finding the Fourth Proportional to 10,680.12, 16,013.94 and 7,174.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,680.12 : 16,013.94 = 7,174.20 : x
2. Step 2: Convert to fraction form
   10,680.12/16,013.94 = 7,174.20/x
3. Step 3: Cross multiply
   10,680.12x = 16,013.94 × 7,174.20
4. Step 4: Simplify right side
   10,680.12x = 114,887,208.35
5. Step 5: Solve for x
   x = 114,887,208.35/10,680.12
6. Step 6: Final answer
   x = 10,757.11