Finding the Fourth Proportional to 13,150.12, 18,150.18 and 8,674.28

Step by Step Solution

1. Step 1: Write the proportion equation
   13,150.12 : 18,150.18 = 8,674.28 : x
2. Step 2: Convert to fraction form
   13,150.12/18,150.18 = 8,674.28/x
3. Step 3: Cross multiply
   13,150.12x = 18,150.18 × 8,674.28
4. Step 4: Simplify right side
   13,150.12x = 157,439,743.37
5. Step 5: Solve for x
   x = 157,439,743.37/13,150.12
6. Step 6: Final answer
   x = 11,972.49