Finding the Fourth Proportional to 21,061.56, 29,064.51 and 11,629.92

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.56 : 29,064.51 = 11,629.92 : x
2. Step 2: Convert to fraction form
   21,061.56/29,064.51 = 11,629.92/x
3. Step 3: Cross multiply
   21,061.56x = 29,064.51 × 11,629.92
4. Step 4: Simplify right side
   21,061.56x = 338,017,926.14
5. Step 5: Solve for x
   x = 338,017,926.14/21,061.56
6. Step 6: Final answer
   x = 16,049.05