Finding the Fourth Proportional to 16,786.88, 23,158.10 and 13,434.42

Step by Step Solution

1. Step 1: Write the proportion equation
   16,786.88 : 23,158.10 = 13,434.42 : x
2. Step 2: Convert to fraction form
   16,786.88/23,158.10 = 13,434.42/x
3. Step 3: Cross multiply
   16,786.88x = 23,158.10 × 13,434.42
4. Step 4: Simplify right side
   16,786.88x = 311,115,641.80
5. Step 5: Solve for x
   x = 311,115,641.80/16,786.88
6. Step 6: Final answer
   x = 18,533.26