Finding the Fourth Proportional to 9,222.06, 12,727.58 and 5,636.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,222.06 : 12,727.58 = 5,636.28 : x
2. Step 2: Convert to fraction form
   9,222.06/12,727.58 = 5,636.28/x
3. Step 3: Cross multiply
   9,222.06x = 12,727.58 × 5,636.28
4. Step 4: Simplify right side
   9,222.06x = 71,736,160.40
5. Step 5: Solve for x
   x = 71,736,160.40/9,222.06
6. Step 6: Final answer
   x = 7,778.76