Finding the Fourth Proportional to 5,222.70, 7,826.72 and 2,883.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,222.70 : 7,826.72 = 2,883.78 : x
2. Step 2: Convert to fraction form
   5,222.70/7,826.72 = 2,883.78/x
3. Step 3: Cross multiply
   5,222.70x = 7,826.72 × 2,883.78
4. Step 4: Simplify right side
   5,222.70x = 22,570,524.18
5. Step 5: Solve for x
   x = 22,570,524.18/5,222.70
6. Step 6: Final answer
   x = 4,321.62