Finding the Fourth Proportional to 21,613.30, 29,825.49 and 12,183.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,613.30 : 29,825.49 = 12,183.82 : x
2. Step 2: Convert to fraction form
   21,613.30/29,825.49 = 12,183.82/x
3. Step 3: Cross multiply
   21,613.30x = 29,825.49 × 12,183.82
4. Step 4: Simplify right side
   21,613.30x = 363,388,401.57
5. Step 5: Solve for x
   x = 363,388,401.57/21,613.30
6. Step 6: Final answer
   x = 16,813.18