Finding the Fourth Proportional to 10,808.35, 16,213.87 and 3,411.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,808.35 : 16,213.87 = 3,411.72 : x
2. Step 2: Convert to fraction form
   10,808.35/16,213.87 = 3,411.72/x
3. Step 3: Cross multiply
   10,808.35x = 16,213.87 × 3,411.72
4. Step 4: Simplify right side
   10,808.35x = 55,317,184.56
5. Step 5: Solve for x
   x = 55,317,184.56/10,808.35
6. Step 6: Final answer
   x = 5,118.00