Finding the Fourth Proportional to 4,822.98, 7,243.73 and 4,279.87

Step by Step Solution

1. Step 1: Write the proportion equation
   4,822.98 : 7,243.73 = 4,279.87 : x
2. Step 2: Convert to fraction form
   4,822.98/7,243.73 = 4,279.87/x
3. Step 3: Cross multiply
   4,822.98x = 7,243.73 × 4,279.87
4. Step 4: Simplify right side
   4,822.98x = 31,002,222.72
5. Step 5: Solve for x
   x = 31,002,222.72/4,822.98
6. Step 6: Final answer
   x = 6,428.02