Finding the Fourth Proportional to 7,020.77, 9,680.22 and 5,677.82

Step by Step Solution

1. Step 1: Write the proportion equation
   7,020.77 : 9,680.22 = 5,677.82 : x
2. Step 2: Convert to fraction form
   7,020.77/9,680.22 = 5,677.82/x
3. Step 3: Cross multiply
   7,020.77x = 9,680.22 × 5,677.82
4. Step 4: Simplify right side
   7,020.77x = 54,962,469.93
5. Step 5: Solve for x
   x = 54,962,469.93/7,020.77
6. Step 6: Final answer
   x = 7,828.55