Finding the Fourth Proportional to 21,744.56, 30,003.83 and 12,671.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,744.56 : 30,003.83 = 12,671.42 : x
2. Step 2: Convert to fraction form
   21,744.56/30,003.83 = 12,671.42/x
3. Step 3: Cross multiply
   21,744.56x = 30,003.83 × 12,671.42
4. Step 4: Simplify right side
   21,744.56x = 380,191,131.54
5. Step 5: Solve for x
   x = 380,191,131.54/21,744.56
6. Step 6: Final answer
   x = 17,484.43