Finding the Fourth Proportional to 9,222.56, 12,723.48 and 5,679.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,222.56 : 12,723.48 = 5,679.62 : x
2. Step 2: Convert to fraction form
   9,222.56/12,723.48 = 5,679.62/x
3. Step 3: Cross multiply
   9,222.56x = 12,723.48 × 5,679.62
4. Step 4: Simplify right side
   9,222.56x = 72,264,531.48
5. Step 5: Solve for x
   x = 72,264,531.48/9,222.56
6. Step 6: Final answer
   x = 7,835.63