Finding the Fourth Proportional to 6,978.94, 10,465.67 and 2,818.17

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978.94 : 10,465.67 = 2,818.17 : x
2. Step 2: Convert to fraction form
   6,978.94/10,465.67 = 2,818.17/x
3. Step 3: Cross multiply
   6,978.94x = 10,465.67 × 2,818.17
4. Step 4: Simplify right side
   6,978.94x = 29,494,044.27
5. Step 5: Solve for x
   x = 29,494,044.27/6,978.94
6. Step 6: Final answer
   x = 4,226.15