Finding the Fourth Proportional to 22,228.86, 30,674.58 and 12,155.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,228.86 : 30,674.58 = 12,155.30 : x
2. Step 2: Convert to fraction form
   22,228.86/30,674.58 = 12,155.30/x
3. Step 3: Cross multiply
   22,228.86x = 30,674.58 × 12,155.30
4. Step 4: Simplify right side
   22,228.86x = 372,858,722.27
5. Step 5: Solve for x
   x = 372,858,722.27/22,228.86
6. Step 6: Final answer
   x = 16,773.63