Finding the Fourth Proportional to 7,211.08, 9,949.41 and 4,225.31

Step by Step Solution

1. Step 1: Write the proportion equation
   7,211.08 : 9,949.41 = 4,225.31 : x
2. Step 2: Convert to fraction form
   7,211.08/9,949.41 = 4,225.31/x
3. Step 3: Cross multiply
   7,211.08x = 9,949.41 × 4,225.31
4. Step 4: Simplify right side
   7,211.08x = 42,039,341.57
5. Step 5: Solve for x
   x = 42,039,341.57/7,211.08
6. Step 6: Final answer
   x = 5,829.83