Finding the Fourth Proportional to 21,429.42, 29,613.27 and 16,115.01

Step by Step Solution

1. Step 1: Write the proportion equation
   21,429.42 : 29,613.27 = 16,115.01 : x
2. Step 2: Convert to fraction form
   21,429.42/29,613.27 = 16,115.01/x
3. Step 3: Cross multiply
   21,429.42x = 29,613.27 × 16,115.01
4. Step 4: Simplify right side
   21,429.42x = 477,218,142.18
5. Step 5: Solve for x
   x = 477,218,142.18/21,429.42
6. Step 6: Final answer
   x = 22,269.30