Finding the Fourth Proportional to 7,081.10, 10,620.96 and 2,150.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,081.10 : 10,620.96 = 2,150.78 : x
2. Step 2: Convert to fraction form
   7,081.10/10,620.96 = 2,150.78/x
3. Step 3: Cross multiply
   7,081.10x = 10,620.96 × 2,150.78
4. Step 4: Simplify right side
   7,081.10x = 22,843,348.35
5. Step 5: Solve for x
   x = 22,843,348.35/7,081.10
6. Step 6: Final answer
   x = 3,225.96