Finding the Fourth Proportional to 17,320.32, 25,967.52 and 15,561

Step by Step Solution

1. Step 1: Write the proportion equation
   17,320.32 : 25,967.52 = 15,561 : x
2. Step 2: Convert to fraction form
   17,320.32/25,967.52 = 15,561/x
3. Step 3: Cross multiply
   17,320.32x = 25,967.52 × 15,561
4. Step 4: Simplify right side
   17,320.32x = 404,080,578.72
5. Step 5: Solve for x
   x = 404,080,578.72/17,320.32
6. Step 6: Final answer
   x = 23,329.86