Finding the Fourth Proportional to 17,104.69, 23,620.78 and 16,172.85

Step by Step Solution

1. Step 1: Write the proportion equation
   17,104.69 : 23,620.78 = 16,172.85 : x
2. Step 2: Convert to fraction form
   17,104.69/23,620.78 = 16,172.85/x
3. Step 3: Cross multiply
   17,104.69x = 23,620.78 × 16,172.85
4. Step 4: Simplify right side
   17,104.69x = 382,015,331.82
5. Step 5: Solve for x
   x = 382,015,331.82/17,104.69
6. Step 6: Final answer
   x = 22,333.95