Finding the Fourth Proportional to 16,769.50, 23,142.63 and 9,317.50

Step by Step Solution

1. Step 1: Write the proportion equation
   16,769.50 : 23,142.63 = 9,317.50 : x
2. Step 2: Convert to fraction form
   16,769.50/23,142.63 = 9,317.50/x
3. Step 3: Cross multiply
   16,769.50x = 23,142.63 × 9,317.50
4. Step 4: Simplify right side
   16,769.50x = 215,631,455.03
5. Step 5: Solve for x
   x = 215,631,455.03/16,769.50
6. Step 6: Final answer
   x = 12,858.55