Finding the Fourth Proportional to 7,217.97, 10,819.53 and 3,930.18

Step by Step Solution

1. Step 1: Write the proportion equation
   7,217.97 : 10,819.53 = 3,930.18 : x
2. Step 2: Convert to fraction form
   7,217.97/10,819.53 = 3,930.18/x
3. Step 3: Cross multiply
   7,217.97x = 10,819.53 × 3,930.18
4. Step 4: Simplify right side
   7,217.97x = 42,522,700.42
5. Step 5: Solve for x
   x = 42,522,700.42/7,217.97
6. Step 6: Final answer
   x = 5,891.23