Finding the Fourth Proportional to 6,724.01, 10,081.87 and 3,215.09

Step by Step Solution

1. Step 1: Write the proportion equation
   6,724.01 : 10,081.87 = 3,215.09 : x
2. Step 2: Convert to fraction form
   6,724.01/10,081.87 = 3,215.09/x
3. Step 3: Cross multiply
   6,724.01x = 10,081.87 × 3,215.09
4. Step 4: Simplify right side
   6,724.01x = 32,414,136.59
5. Step 5: Solve for x
   x = 32,414,136.59/6,724.01
6. Step 6: Final answer
   x = 4,820.65