Finding the Fourth Proportional to 6,391.22, 8,819.78 and 3,738.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,391.22 : 8,819.78 = 3,738.12 : x
2. Step 2: Convert to fraction form
   6,391.22/8,819.78 = 3,738.12/x
3. Step 3: Cross multiply
   6,391.22x = 8,819.78 × 3,738.12
4. Step 4: Simplify right side
   6,391.22x = 32,969,396.01
5. Step 5: Solve for x
   x = 32,969,396.01/6,391.22
6. Step 6: Final answer
   x = 5,158.55