Finding the Fourth Proportional to 22,303.50, 30,776.79 and 12,231.78

Step by Step Solution

1. Step 1: Write the proportion equation
   22,303.50 : 30,776.79 = 12,231.78 : x
2. Step 2: Convert to fraction form
   22,303.50/30,776.79 = 12,231.78/x
3. Step 3: Cross multiply
   22,303.50x = 30,776.79 × 12,231.78
4. Step 4: Simplify right side
   22,303.50x = 376,454,924.39
5. Step 5: Solve for x
   x = 376,454,924.39/22,303.50
6. Step 6: Final answer
   x = 16,878.74