Finding the Fourth Proportional to 12,155.78, 18,233.69 and 8,014.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,155.78 : 18,233.69 = 8,014.29 : x
2. Step 2: Convert to fraction form
   12,155.78/18,233.69 = 8,014.29/x
3. Step 3: Cross multiply
   12,155.78x = 18,233.69 × 8,014.29
4. Step 4: Simplify right side
   12,155.78x = 146,130,031.09
5. Step 5: Solve for x
   x = 146,130,031.09/12,155.78
6. Step 6: Final answer
   x = 12,021.44