Finding the Fourth Proportional to 8,525.72, 12,790.31 and 2,680.97

Step by Step Solution

1. Step 1: Write the proportion equation
   8,525.72 : 12,790.31 = 2,680.97 : x
2. Step 2: Convert to fraction form
   8,525.72/12,790.31 = 2,680.97/x
3. Step 3: Cross multiply
   8,525.72x = 12,790.31 × 2,680.97
4. Step 4: Simplify right side
   8,525.72x = 34,290,360.04
5. Step 5: Solve for x
   x = 34,290,360.04/8,525.72
6. Step 6: Final answer
   x = 4,021.99