Finding the Fourth Proportional to 22,288.74, 30,756.42 and 12,855.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,288.74 : 30,756.42 = 12,855.48 : x
2. Step 2: Convert to fraction form
   22,288.74/30,756.42 = 12,855.48/x
3. Step 3: Cross multiply
   22,288.74x = 30,756.42 × 12,855.48
4. Step 4: Simplify right side
   22,288.74x = 395,388,542.18
5. Step 5: Solve for x
   x = 395,388,542.18/22,288.74
6. Step 6: Final answer
   x = 17,739.39