Finding the Fourth Proportional to 21,572.83, 32,363.86 and 12,217.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,572.83 : 32,363.86 = 12,217.27 : x
2. Step 2: Convert to fraction form
   21,572.83/32,363.86 = 12,217.27/x
3. Step 3: Cross multiply
   21,572.83x = 32,363.86 × 12,217.27
4. Step 4: Simplify right side
   21,572.83x = 395,397,854.04
5. Step 5: Solve for x
   x = 395,397,854.04/21,572.83
6. Step 6: Final answer
   x = 18,328.52