Finding the Fourth Proportional to 12,107.34, 18,169.38 and 7,949.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,107.34 : 18,169.38 = 7,949.34 : x
2. Step 2: Convert to fraction form
   12,107.34/18,169.38 = 7,949.34/x
3. Step 3: Cross multiply
   12,107.34x = 18,169.38 × 7,949.34
4. Step 4: Simplify right side
   12,107.34x = 144,434,579.21
5. Step 5: Solve for x
   x = 144,434,579.21/12,107.34
6. Step 6: Final answer
   x = 11,929.51