Finding the Fourth Proportional to 12,767.62, 17,614.29 and 9,418.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,767.62 : 17,614.29 = 9,418.50 : x
2. Step 2: Convert to fraction form
   12,767.62/17,614.29 = 9,418.50/x
3. Step 3: Cross multiply
   12,767.62x = 17,614.29 × 9,418.50
4. Step 4: Simplify right side
   12,767.62x = 165,900,190.37
5. Step 5: Solve for x
   x = 165,900,190.37/12,767.62
6. Step 6: Final answer
   x = 12,993.82