Finding the Fourth Proportional to 5,216.34, 7,198.56 and 2,858.52

Step by Step Solution

1. Step 1: Write the proportion equation
   5,216.34 : 7,198.56 = 2,858.52 : x
2. Step 2: Convert to fraction form
   5,216.34/7,198.56 = 2,858.52/x
3. Step 3: Cross multiply
   5,216.34x = 7,198.56 × 2,858.52
4. Step 4: Simplify right side
   5,216.34x = 20,577,227.73
5. Step 5: Solve for x
   x = 20,577,227.73/5,216.34
6. Step 6: Final answer
   x = 3,944.76