Finding the Fourth Proportional to 8,920.83, 13,380.73 and 2,680.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,920.83 : 13,380.73 = 2,680.71 : x
2. Step 2: Convert to fraction form
   8,920.83/13,380.73 = 2,680.71/x
3. Step 3: Cross multiply
   8,920.83x = 13,380.73 × 2,680.71
4. Step 4: Simplify right side
   8,920.83x = 35,869,843.31
5. Step 5: Solve for x
   x = 35,869,843.31/8,920.83
6. Step 6: Final answer
   x = 4,020.91