Finding the Fourth Proportional to 5,278.83, 7,284.72 and 2,920.83

Step by Step Solution

1. Step 1: Write the proportion equation
   5,278.83 : 7,284.72 = 2,920.83 : x
2. Step 2: Convert to fraction form
   5,278.83/7,284.72 = 2,920.83/x
3. Step 3: Cross multiply
   5,278.83x = 7,284.72 × 2,920.83
4. Step 4: Simplify right side
   5,278.83x = 21,277,428.72
5. Step 5: Solve for x
   x = 21,277,428.72/5,278.83
6. Step 6: Final answer
   x = 4,030.71