Finding the Fourth Proportional to 11,627.49, 17,442.15 and 7,966.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,627.49 : 17,442.15 = 7,966.09 : x
2. Step 2: Convert to fraction form
   11,627.49/17,442.15 = 7,966.09/x
3. Step 3: Cross multiply
   11,627.49x = 17,442.15 × 7,966.09
4. Step 4: Simplify right side
   11,627.49x = 138,945,736.69
5. Step 5: Solve for x
   x = 138,945,736.69/11,627.49
6. Step 6: Final answer
   x = 11,949.76