Finding the Fourth Proportional to 20,632.50, 28,480.23 and 12,249

Step by Step Solution

1. Step 1: Write the proportion equation
   20,632.50 : 28,480.23 = 12,249 : x
2. Step 2: Convert to fraction form
   20,632.50/28,480.23 = 12,249/x
3. Step 3: Cross multiply
   20,632.50x = 28,480.23 × 12,249
4. Step 4: Simplify right side
   20,632.50x = 348,854,337.27
5. Step 5: Solve for x
   x = 348,854,337.27/20,632.50
6. Step 6: Final answer
   x = 16,908.00