Finding the Fourth Proportional to 17,175.69, 23,823.72 and 16,720.47

Step by Step Solution

1. Step 1: Write the proportion equation
   17,175.69 : 23,823.72 = 16,720.47 : x
2. Step 2: Convert to fraction form
   17,175.69/23,823.72 = 16,720.47/x
3. Step 3: Cross multiply
   17,175.69x = 23,823.72 × 16,720.47
4. Step 4: Simplify right side
   17,175.69x = 398,343,795.55
5. Step 5: Solve for x
   x = 398,343,795.55/17,175.69
6. Step 6: Final answer
   x = 23,192.30