Finding the Fourth Proportional to 21,061, 29,064.24 and 11,629.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061 : 29,064.24 = 11,629.48 : x
2. Step 2: Convert to fraction form
   21,061/29,064.24 = 11,629.48/x
3. Step 3: Cross multiply
   21,061x = 29,064.24 × 11,629.48
4. Step 4: Simplify right side
   21,061x = 338,001,997.80
5. Step 5: Solve for x
   x = 338,001,997.80/21,061
6. Step 6: Final answer
   x = 16,048.72