Finding the Fourth Proportional to 21,606.50, 29,818.68 and 12,049.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,606.50 : 29,818.68 = 12,049.50 : x
2. Step 2: Convert to fraction form
   21,606.50/29,818.68 = 12,049.50/x
3. Step 3: Cross multiply
   21,606.50x = 29,818.68 × 12,049.50
4. Step 4: Simplify right side
   21,606.50x = 359,300,184.66
5. Step 5: Solve for x
   x = 359,300,184.66/21,606.50
6. Step 6: Final answer
   x = 16,629.26