Finding the Fourth Proportional to 5,278.69, 7,284.67 and 2,920.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,278.69 : 7,284.67 = 2,920.82 : x
2. Step 2: Convert to fraction form
   5,278.69/7,284.67 = 2,920.82/x
3. Step 3: Cross multiply
   5,278.69x = 7,284.67 × 2,920.82
4. Step 4: Simplify right side
   5,278.69x = 21,277,209.83
5. Step 5: Solve for x
   x = 21,277,209.83/5,278.69
6. Step 6: Final answer
   x = 4,030.77