Finding the Fourth Proportional to 5,672.82, 7,828.98 and 3,315.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,672.82 : 7,828.98 = 3,315.72 : x
2. Step 2: Convert to fraction form
   5,672.82/7,828.98 = 3,315.72/x
3. Step 3: Cross multiply
   5,672.82x = 7,828.98 × 3,315.72
4. Step 4: Simplify right side
   5,672.82x = 25,958,705.57
5. Step 5: Solve for x
   x = 25,958,705.57/5,672.82
6. Step 6: Final answer
   x = 4,575.98