Finding the Fourth Proportional to 12,150.90, 16,773.62 and 8,958.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,150.90 : 16,773.62 = 8,958.69 : x
2. Step 2: Convert to fraction form
   12,150.90/16,773.62 = 8,958.69/x
3. Step 3: Cross multiply
   12,150.90x = 16,773.62 × 8,958.69
4. Step 4: Simplify right side
   12,150.90x = 150,269,616.96
5. Step 5: Solve for x
   x = 150,269,616.96/12,150.90
6. Step 6: Final answer
   x = 12,366.95