Finding the Fourth Proportional to 17,142, 25,706.32 and 7,281.68

Step by Step Solution

1. Step 1: Write the proportion equation
   17,142 : 25,706.32 = 7,281.68 : x
2. Step 2: Convert to fraction form
   17,142/25,706.32 = 7,281.68/x
3. Step 3: Cross multiply
   17,142x = 25,706.32 × 7,281.68
4. Step 4: Simplify right side
   17,142x = 187,185,196.22
5. Step 5: Solve for x
   x = 187,185,196.22/17,142
6. Step 6: Final answer
   x = 10,919.68