Finding the Fourth Proportional to 16,758.81, 25,109.10 and 10,171.11

Step by Step Solution

1. Step 1: Write the proportion equation
   16,758.81 : 25,109.10 = 10,171.11 : x
2. Step 2: Convert to fraction form
   16,758.81/25,109.10 = 10,171.11/x
3. Step 3: Cross multiply
   16,758.81x = 25,109.10 × 10,171.11
4. Step 4: Simplify right side
   16,758.81x = 255,387,418.10
5. Step 5: Solve for x
   x = 255,387,418.10/16,758.81
6. Step 6: Final answer
   x = 15,238.99