Finding the Fourth Proportional to 17,189.72, 25,783.48 and 10,259

Step by Step Solution

1. Step 1: Write the proportion equation
   17,189.72 : 25,783.48 = 10,259 : x
2. Step 2: Convert to fraction form
   17,189.72/25,783.48 = 10,259/x
3. Step 3: Cross multiply
   17,189.72x = 25,783.48 × 10,259
4. Step 4: Simplify right side
   17,189.72x = 264,512,721.32
5. Step 5: Solve for x
   x = 264,512,721.32/17,189.72
6. Step 6: Final answer
   x = 15,387.84