Finding the Fourth Proportional to 7,081.91, 10,621.55 and 3,281.65

Step by Step Solution

1. Step 1: Write the proportion equation
   7,081.91 : 10,621.55 = 3,281.65 : x
2. Step 2: Convert to fraction form
   7,081.91/10,621.55 = 3,281.65/x
3. Step 3: Cross multiply
   7,081.91x = 10,621.55 × 3,281.65
4. Step 4: Simplify right side
   7,081.91x = 34,856,209.56
5. Step 5: Solve for x
   x = 34,856,209.56/7,081.91
6. Step 6: Final answer
   x = 4,921.87