Finding the Fourth Proportional to 12,016.62, 18,030.33 and 7,632.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,016.62 : 18,030.33 = 7,632.90 : x
2. Step 2: Convert to fraction form
   12,016.62/18,030.33 = 7,632.90/x
3. Step 3: Cross multiply
   12,016.62x = 18,030.33 × 7,632.90
4. Step 4: Simplify right side
   12,016.62x = 137,623,705.86
5. Step 5: Solve for x
   x = 137,623,705.86/12,016.62
6. Step 6: Final answer
   x = 11,452.78