Finding the Fourth Proportional to 16,645.75, 22,971.81 and 9,572.17

Step by Step Solution

1. Step 1: Write the proportion equation
   16,645.75 : 22,971.81 = 9,572.17 : x
2. Step 2: Convert to fraction form
   16,645.75/22,971.81 = 9,572.17/x
3. Step 3: Cross multiply
   16,645.75x = 22,971.81 × 9,572.17
4. Step 4: Simplify right side
   16,645.75x = 219,890,092.07
5. Step 5: Solve for x
   x = 219,890,092.07/16,645.75
6. Step 6: Final answer
   x = 13,209.99