Finding the Fourth Proportional to 21,613.05, 29,825.42 and 12,053.23

Step by Step Solution

1. Step 1: Write the proportion equation
   21,613.05 : 29,825.42 = 12,053.23 : x
2. Step 2: Convert to fraction form
   21,613.05/29,825.42 = 12,053.23/x
3. Step 3: Cross multiply
   21,613.05x = 29,825.42 × 12,053.23
4. Step 4: Simplify right side
   21,613.05x = 359,492,512.28
5. Step 5: Solve for x
   x = 359,492,512.28/21,613.05
6. Step 6: Final answer
   x = 16,633.12