Finding the Fourth Proportional to 5,287.98, 7,935.56 and 2,824.57

Step by Step Solution

1. Step 1: Write the proportion equation
   5,287.98 : 7,935.56 = 2,824.57 : x
2. Step 2: Convert to fraction form
   5,287.98/7,935.56 = 2,824.57/x
3. Step 3: Cross multiply
   5,287.98x = 7,935.56 × 2,824.57
4. Step 4: Simplify right side
   5,287.98x = 22,414,544.71
5. Step 5: Solve for x
   x = 22,414,544.71/5,287.98
6. Step 6: Final answer
   x = 4,238.77