Finding the Fourth Proportional to 16,257.21, 22,434.68 and 9,087.30

Step by Step Solution

1. Step 1: Write the proportion equation
   16,257.21 : 22,434.68 = 9,087.30 : x
2. Step 2: Convert to fraction form
   16,257.21/22,434.68 = 9,087.30/x
3. Step 3: Cross multiply
   16,257.21x = 22,434.68 × 9,087.30
4. Step 4: Simplify right side
   16,257.21x = 203,870,667.56
5. Step 5: Solve for x
   x = 203,870,667.56/16,257.21
6. Step 6: Final answer
   x = 12,540.32