Finding the Fourth Proportional to 10,875.18, 16,311.38 and 3,480.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,875.18 : 16,311.38 = 3,480.42 : x
2. Step 2: Convert to fraction form
   10,875.18/16,311.38 = 3,480.42/x
3. Step 3: Cross multiply
   10,875.18x = 16,311.38 × 3,480.42
4. Step 4: Simplify right side
   10,875.18x = 56,770,453.18
5. Step 5: Solve for x
   x = 56,770,453.18/10,875.18
6. Step 6: Final answer
   x = 5,220.19