Finding the Fourth Proportional to 21,436.34, 29,581.32 and 12,004.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,436.34 : 29,581.32 = 12,004.42 : x
2. Step 2: Convert to fraction form
   21,436.34/29,581.32 = 12,004.42/x
3. Step 3: Cross multiply
   21,436.34x = 29,581.32 × 12,004.42
4. Step 4: Simplify right side
   21,436.34x = 355,106,589.43
5. Step 5: Solve for x
   x = 355,106,589.43/21,436.34
6. Step 6: Final answer
   x = 16,565.64