Finding the Fourth Proportional to 21,662.50, 29,894.25 and 12,230.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,662.50 : 29,894.25 = 12,230.86 : x
2. Step 2: Convert to fraction form
   21,662.50/29,894.25 = 12,230.86/x
3. Step 3: Cross multiply
   21,662.50x = 29,894.25 × 12,230.86
4. Step 4: Simplify right side
   21,662.50x = 365,632,386.56
5. Step 5: Solve for x
   x = 365,632,386.56/21,662.50
6. Step 6: Final answer
   x = 16,878.59