Finding the Fourth Proportional to 22,815.74, 31,485.86 and 12,744.24

Step by Step Solution

1. Step 1: Write the proportion equation
   22,815.74 : 31,485.86 = 12,744.24 : x
2. Step 2: Convert to fraction form
   22,815.74/31,485.86 = 12,744.24/x
3. Step 3: Cross multiply
   22,815.74x = 31,485.86 × 12,744.24
4. Step 4: Simplify right side
   22,815.74x = 401,263,356.45
5. Step 5: Solve for x
   x = 401,263,356.45/22,815.74
6. Step 6: Final answer
   x = 17,587.13