Finding the Fourth Proportional to 12,379.53, 18,575.69 and 8,222.42

Step by Step Solution

1. Step 1: Write the proportion equation
   12,379.53 : 18,575.69 = 8,222.42 : x
2. Step 2: Convert to fraction form
   12,379.53/18,575.69 = 8,222.42/x
3. Step 3: Cross multiply
   12,379.53x = 18,575.69 × 8,222.42
4. Step 4: Simplify right side
   12,379.53x = 152,736,990.98
5. Step 5: Solve for x
   x = 152,736,990.98/12,379.53
6. Step 6: Final answer
   x = 12,337.87