Finding the Fourth Proportional to 10,853.10, 16,280.55 and 3,457.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,853.10 : 16,280.55 = 3,457.35 : x
2. Step 2: Convert to fraction form
   10,853.10/16,280.55 = 3,457.35/x
3. Step 3: Cross multiply
   10,853.10x = 16,280.55 × 3,457.35
4. Step 4: Simplify right side
   10,853.10x = 56,287,559.54
5. Step 5: Solve for x
   x = 56,287,559.54/10,853.10
6. Step 6: Final answer
   x = 5,186.31