Finding the Fourth Proportional to 22,326.72, 30,811.74 and 12,255.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,326.72 : 30,811.74 = 12,255.57 : x
2. Step 2: Convert to fraction form
   22,326.72/30,811.74 = 12,255.57/x
3. Step 3: Cross multiply
   22,326.72x = 30,811.74 × 12,255.57
4. Step 4: Simplify right side
   22,326.72x = 377,615,436.39
5. Step 5: Solve for x
   x = 377,615,436.39/22,326.72
6. Step 6: Final answer
   x = 16,913.16