Finding the Fourth Proportional to 7,108.56, 10,658.79 and 3,209.22

Step by Step Solution

1. Step 1: Write the proportion equation
   7,108.56 : 10,658.79 = 3,209.22 : x
2. Step 2: Convert to fraction form
   7,108.56/10,658.79 = 3,209.22/x
3. Step 3: Cross multiply
   7,108.56x = 10,658.79 × 3,209.22
4. Step 4: Simplify right side
   7,108.56x = 34,206,402.04
5. Step 5: Solve for x
   x = 34,206,402.04/7,108.56
6. Step 6: Final answer
   x = 4,812.00