Finding the Fourth Proportional to 17,192.75, 25,672.72 and 13,642.91

Step by Step Solution

1. Step 1: Write the proportion equation
   17,192.75 : 25,672.72 = 13,642.91 : x
2. Step 2: Convert to fraction form
   17,192.75/25,672.72 = 13,642.91/x
3. Step 3: Cross multiply
   17,192.75x = 25,672.72 × 13,642.91
4. Step 4: Simplify right side
   17,192.75x = 350,250,445.94
5. Step 5: Solve for x
   x = 350,250,445.94/17,192.75
6. Step 6: Final answer
   x = 20,371.99