Finding the Fourth Proportional to 16,020.25, 22,106.70 and 9,304.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,020.25 : 22,106.70 = 9,304.78 : x
2. Step 2: Convert to fraction form
   16,020.25/22,106.70 = 9,304.78/x
3. Step 3: Cross multiply
   16,020.25x = 22,106.70 × 9,304.78
4. Step 4: Simplify right side
   16,020.25x = 205,697,980.03
5. Step 5: Solve for x
   x = 205,697,980.03/16,020.25
6. Step 6: Final answer
   x = 12,839.87