Finding the Fourth Proportional to 12,965.50, 17,894.55 and 9,816.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,965.50 : 17,894.55 = 9,816.22 : x
2. Step 2: Convert to fraction form
   12,965.50/17,894.55 = 9,816.22/x
3. Step 3: Cross multiply
   12,965.50x = 17,894.55 × 9,816.22
4. Step 4: Simplify right side
   12,965.50x = 175,656,839.60
5. Step 5: Solve for x
   x = 175,656,839.60/12,965.50
6. Step 6: Final answer
   x = 13,548.02