Finding the Fourth Proportional to 5,243.46, 7,870.04 and 2,648.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,243.46 : 7,870.04 = 2,648.22 : x
2. Step 2: Convert to fraction form
   5,243.46/7,870.04 = 2,648.22/x
3. Step 3: Cross multiply
   5,243.46x = 7,870.04 × 2,648.22
4. Step 4: Simplify right side
   5,243.46x = 20,841,597.33
5. Step 5: Solve for x
   x = 20,841,597.33/5,243.46
6. Step 6: Final answer
   x = 3,974.78