Finding the Fourth Proportional to 12,089.50, 18,162.05 and 8,588.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,089.50 : 18,162.05 = 8,588.02 : x
2. Step 2: Convert to fraction form
   12,089.50/18,162.05 = 8,588.02/x
3. Step 3: Cross multiply
   12,089.50x = 18,162.05 × 8,588.02
4. Step 4: Simplify right side
   12,089.50x = 155,976,048.64
5. Step 5: Solve for x
   x = 155,976,048.64/12,089.50
6. Step 6: Final answer
   x = 12,901.78