Finding the Fourth Proportional to 12,155.82, 18,233.72 and 9,386.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,155.82 : 18,233.72 = 9,386.54 : x
2. Step 2: Convert to fraction form
   12,155.82/18,233.72 = 9,386.54/x
3. Step 3: Cross multiply
   12,155.82x = 18,233.72 × 9,386.54
4. Step 4: Simplify right side
   12,155.82x = 171,151,542.13
5. Step 5: Solve for x
   x = 171,151,542.13/12,155.82
6. Step 6: Final answer
   x = 14,079.80