Finding the Fourth Proportional to 10,803.62, 16,205.78 and 3,408.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,803.62 : 16,205.78 = 3,408.15 : x
2. Step 2: Convert to fraction form
   10,803.62/16,205.78 = 3,408.15/x
3. Step 3: Cross multiply
   10,803.62x = 16,205.78 × 3,408.15
4. Step 4: Simplify right side
   10,803.62x = 55,231,729.11
5. Step 5: Solve for x
   x = 55,231,729.11/10,803.62
6. Step 6: Final answer
   x = 5,112.34