Finding the Fourth Proportional to 16,783.72, 25,156.38 and 10,939.24

Step by Step Solution

1. Step 1: Write the proportion equation
   16,783.72 : 25,156.38 = 10,939.24 : x
2. Step 2: Convert to fraction form
   16,783.72/25,156.38 = 10,939.24/x
3. Step 3: Cross multiply
   16,783.72x = 25,156.38 × 10,939.24
4. Step 4: Simplify right side
   16,783.72x = 275,191,678.35
5. Step 5: Solve for x
   x = 275,191,678.35/16,783.72
6. Step 6: Final answer
   x = 16,396.35