Finding the Fourth Proportional to 12,816.27, 17,686.46 and 7,227.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,816.27 : 17,686.46 = 7,227.27 : x
2. Step 2: Convert to fraction form
   12,816.27/17,686.46 = 7,227.27/x
3. Step 3: Cross multiply
   12,816.27x = 17,686.46 × 7,227.27
4. Step 4: Simplify right side
   12,816.27x = 127,824,821.76
5. Step 5: Solve for x
   x = 127,824,821.76/12,816.27
6. Step 6: Final answer
   x = 9,973.64