Finding the Fourth Proportional to 11,105.67, 16,661.24 and 7,825.17

Step by Step Solution

1. Step 1: Write the proportion equation
   11,105.67 : 16,661.24 = 7,825.17 : x
2. Step 2: Convert to fraction form
   11,105.67/16,661.24 = 7,825.17/x
3. Step 3: Cross multiply
   11,105.67x = 16,661.24 × 7,825.17
4. Step 4: Simplify right side
   11,105.67x = 130,377,012.32
5. Step 5: Solve for x
   x = 130,377,012.32/11,105.67
6. Step 6: Final answer
   x = 11,739.68