Finding the Fourth Proportional to 12,665.23, 18,981.33 and 9,167.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,665.23 : 18,981.33 = 9,167.02 : x
2. Step 2: Convert to fraction form
   12,665.23/18,981.33 = 9,167.02/x
3. Step 3: Cross multiply
   12,665.23x = 18,981.33 × 9,167.02
4. Step 4: Simplify right side
   12,665.23x = 174,002,231.74
5. Step 5: Solve for x
   x = 174,002,231.74/12,665.23
6. Step 6: Final answer
   x = 13,738.58