Finding the Fourth Proportional to 4,552.94, 6,279.78 and 3,211.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,552.94 : 6,279.78 = 3,211.31 : x
2. Step 2: Convert to fraction form
   4,552.94/6,279.78 = 3,211.31/x
3. Step 3: Cross multiply
   4,552.94x = 6,279.78 × 3,211.31
4. Step 4: Simplify right side
   4,552.94x = 20,166,320.31
5. Step 5: Solve for x
   x = 20,166,320.31/4,552.94
6. Step 6: Final answer
   x = 4,429.30