Finding the Fourth Proportional to 7,081.52, 10,621.59 and 2,151.20

Step by Step Solution

1. Step 1: Write the proportion equation
   7,081.52 : 10,621.59 = 2,151.20 : x
2. Step 2: Convert to fraction form
   7,081.52/10,621.59 = 2,151.20/x
3. Step 3: Cross multiply
   7,081.52x = 10,621.59 × 2,151.20
4. Step 4: Simplify right side
   7,081.52x = 22,849,164.41
5. Step 5: Solve for x
   x = 22,849,164.41/7,081.52
6. Step 6: Final answer
   x = 3,226.59