Finding the Fourth Proportional to 21,404.04, 29,541.04 and 13,447.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,404.04 : 29,541.04 = 13,447.42 : x
2. Step 2: Convert to fraction form
   21,404.04/29,541.04 = 13,447.42/x
3. Step 3: Cross multiply
   21,404.04x = 29,541.04 × 13,447.42
4. Step 4: Simplify right side
   21,404.04x = 397,250,772.12
5. Step 5: Solve for x
   x = 397,250,772.12/21,404.04
6. Step 6: Final answer
   x = 18,559.62