Finding the Fourth Proportional to 20,667.10, 28,524.71 and 12,281.98

Step by Step Solution

1. Step 1: Write the proportion equation
   20,667.10 : 28,524.71 = 12,281.98 : x
2. Step 2: Convert to fraction form
   20,667.10/28,524.71 = 12,281.98/x
3. Step 3: Cross multiply
   20,667.10x = 28,524.71 × 12,281.98
4. Step 4: Simplify right side
   20,667.10x = 350,339,917.73
5. Step 5: Solve for x
   x = 350,339,917.73/20,667.10
6. Step 6: Final answer
   x = 16,951.58