Finding the Fourth Proportional to 12,185.34, 18,242.41 and 11,018.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,185.34 : 18,242.41 = 11,018.06 : x
2. Step 2: Convert to fraction form
   12,185.34/18,242.41 = 11,018.06/x
3. Step 3: Cross multiply
   12,185.34x = 18,242.41 × 11,018.06
4. Step 4: Simplify right side
   12,185.34x = 200,995,967.92
5. Step 5: Solve for x
   x = 200,995,967.92/12,185.34
6. Step 6: Final answer
   x = 16,494.90