Finding the Fourth Proportional to 10,813.48, 16,218.82 and 3,418.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,813.48 : 16,218.82 = 3,418.69 : x
2. Step 2: Convert to fraction form
   10,813.48/16,218.82 = 3,418.69/x
3. Step 3: Cross multiply
   10,813.48x = 16,218.82 × 3,418.69
4. Step 4: Simplify right side
   10,813.48x = 55,447,117.75
5. Step 5: Solve for x
   x = 55,447,117.75/10,813.48
6. Step 6: Final answer
   x = 5,127.59