Finding the Fourth Proportional to 21,061.33, 29,064.45 and 11,629.69

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.33 : 29,064.45 = 11,629.69 : x
2. Step 2: Convert to fraction form
   21,061.33/29,064.45 = 11,629.69/x
3. Step 3: Cross multiply
   21,061.33x = 29,064.45 × 11,629.69
4. Step 4: Simplify right side
   21,061.33x = 338,010,514.47
5. Step 5: Solve for x
   x = 338,010,514.47/21,061.33
6. Step 6: Final answer
   x = 16,048.87