Finding the Fourth Proportional to 17,111.75, 25,613.84 and 10,878.80

Step by Step Solution

1. Step 1: Write the proportion equation
   17,111.75 : 25,613.84 = 10,878.80 : x
2. Step 2: Convert to fraction form
   17,111.75/25,613.84 = 10,878.80/x
3. Step 3: Cross multiply
   17,111.75x = 25,613.84 × 10,878.80
4. Step 4: Simplify right side
   17,111.75x = 278,647,741.72
5. Step 5: Solve for x
   x = 278,647,741.72/17,111.75
6. Step 6: Final answer
   x = 16,284.01