Finding the Fourth Proportional to 7,280.43, 10,920.69 and 2,086.32

Step by Step Solution

1. Step 1: Write the proportion equation
   7,280.43 : 10,920.69 = 2,086.32 : x
2. Step 2: Convert to fraction form
   7,280.43/10,920.69 = 2,086.32/x
3. Step 3: Cross multiply
   7,280.43x = 10,920.69 × 2,086.32
4. Step 4: Simplify right side
   7,280.43x = 22,784,053.96
5. Step 5: Solve for x
   x = 22,784,053.96/7,280.43
6. Step 6: Final answer
   x = 3,129.49