Finding the Fourth Proportional to 10,800.81, 16,202.88 and 3,404.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,800.81 : 16,202.88 = 3,404.61 : x
2. Step 2: Convert to fraction form
   10,800.81/16,202.88 = 3,404.61/x
3. Step 3: Cross multiply
   10,800.81x = 16,202.88 × 3,404.61
4. Step 4: Simplify right side
   10,800.81x = 55,164,487.28
5. Step 5: Solve for x
   x = 55,164,487.28/10,800.81
6. Step 6: Final answer
   x = 5,107.44