Finding the Fourth Proportional to 21,608.43, 29,822.18 and 12,049.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,608.43 : 29,822.18 = 12,049.86 : x
2. Step 2: Convert to fraction form
   21,608.43/29,822.18 = 12,049.86/x
3. Step 3: Cross multiply
   21,608.43x = 29,822.18 × 12,049.86
4. Step 4: Simplify right side
   21,608.43x = 359,353,093.89
5. Step 5: Solve for x
   x = 359,353,093.89/21,608.43
6. Step 6: Final answer
   x = 16,630.23