Finding the Fourth Proportional to 7,216.83, 10,829.04 and 5,121.99

Step by Step Solution

1. Step 1: Write the proportion equation
   7,216.83 : 10,829.04 = 5,121.99 : x
2. Step 2: Convert to fraction form
   7,216.83/10,829.04 = 5,121.99/x
3. Step 3: Cross multiply
   7,216.83x = 10,829.04 × 5,121.99
4. Step 4: Simplify right side
   7,216.83x = 55,466,234.59
5. Step 5: Solve for x
   x = 55,466,234.59/7,216.83
6. Step 6: Final answer
   x = 7,685.68