Finding the Fourth Proportional to 21,061.88, 29,065.26 and 11,630.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,061.88 : 29,065.26 = 11,630.42 : x
2. Step 2: Convert to fraction form
   21,061.88/29,065.26 = 11,630.42/x
3. Step 3: Cross multiply
   21,061.88x = 29,065.26 × 11,630.42
4. Step 4: Simplify right side
   21,061.88x = 338,041,181.21
5. Step 5: Solve for x
   x = 338,041,181.21/21,061.88
6. Step 6: Final answer
   x = 16,049.91