Finding the Fourth Proportional to 10,801.62, 16,202.78 and 3,406.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,801.62 : 16,202.78 = 3,406.15 : x
2. Step 2: Convert to fraction form
   10,801.62/16,202.78 = 3,406.15/x
3. Step 3: Cross multiply
   10,801.62x = 16,202.78 × 3,406.15
4. Step 4: Simplify right side
   10,801.62x = 55,189,001.05
5. Step 5: Solve for x
   x = 55,189,001.05/10,801.62
6. Step 6: Final answer
   x = 5,109.33