Finding the Fourth Proportional to 6,861.94, 10,282.18 and 5,305.79

Step by Step Solution

1. Step 1: Write the proportion equation
   6,861.94 : 10,282.18 = 5,305.79 : x
2. Step 2: Convert to fraction form
   6,861.94/10,282.18 = 5,305.79/x
3. Step 3: Cross multiply
   6,861.94x = 10,282.18 × 5,305.79
4. Step 4: Simplify right side
   6,861.94x = 54,555,087.82
5. Step 5: Solve for x
   x = 54,555,087.82/6,861.94
6. Step 6: Final answer
   x = 7,950.39