Finding the Fourth Proportional to 7,759.48, 10,708.12 and 4,222.72

Step by Step Solution

1. Step 1: Write the proportion equation
   7,759.48 : 10,708.12 = 4,222.72 : x
2. Step 2: Convert to fraction form
   7,759.48/10,708.12 = 4,222.72/x
3. Step 3: Cross multiply
   7,759.48x = 10,708.12 × 4,222.72
4. Step 4: Simplify right side
   7,759.48x = 45,217,392.49
5. Step 5: Solve for x
   x = 45,217,392.49/7,759.48
6. Step 6: Final answer
   x = 5,827.37