Finding the Fourth Proportional to 4,853.89, 7,281.69 and 3,211.78

Step by Step Solution

1. Step 1: Write the proportion equation
   4,853.89 : 7,281.69 = 3,211.78 : x
2. Step 2: Convert to fraction form
   4,853.89/7,281.69 = 3,211.78/x
3. Step 3: Cross multiply
   4,853.89x = 7,281.69 × 3,211.78
4. Step 4: Simplify right side
   4,853.89x = 23,387,186.31
5. Step 5: Solve for x
   x = 23,387,186.31/4,853.89
6. Step 6: Final answer
   x = 4,818.24