Finding the Fourth Proportional to 6,817.28, 10,223.33 and 3,116.91

Step by Step Solution

1. Step 1: Write the proportion equation
   6,817.28 : 10,223.33 = 3,116.91 : x
2. Step 2: Convert to fraction form
   6,817.28/10,223.33 = 3,116.91/x
3. Step 3: Cross multiply
   6,817.28x = 10,223.33 × 3,116.91
4. Step 4: Simplify right side
   6,817.28x = 31,865,183.93
5. Step 5: Solve for x
   x = 31,865,183.93/6,817.28
6. Step 6: Final answer
   x = 4,674.18