Finding the Fourth Proportional to 5,222.88, 7,820.28 and 2,752.56

Step by Step Solution

1. Step 1: Write the proportion equation
   5,222.88 : 7,820.28 = 2,752.56 : x
2. Step 2: Convert to fraction form
   5,222.88/7,820.28 = 2,752.56/x
3. Step 3: Cross multiply
   5,222.88x = 7,820.28 × 2,752.56
4. Step 4: Simplify right side
   5,222.88x = 21,525,789.92
5. Step 5: Solve for x
   x = 21,525,789.92/5,222.88
6. Step 6: Final answer
   x = 4,121.44