Finding the Fourth Proportional to 7,217.83, 10,826.05 and 4,892.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,217.83 : 10,826.05 = 4,892.78 : x
2. Step 2: Convert to fraction form
   7,217.83/10,826.05 = 4,892.78/x
3. Step 3: Cross multiply
   7,217.83x = 10,826.05 × 4,892.78
4. Step 4: Simplify right side
   7,217.83x = 52,969,480.92
5. Step 5: Solve for x
   x = 52,969,480.92/7,217.83
6. Step 6: Final answer
   x = 7,338.70