Finding the Fourth Proportional to 9,810.12, 14,622.78 and 9,022.80

Step by Step Solution

1. Step 1: Write the proportion equation
   9,810.12 : 14,622.78 = 9,022.80 : x
2. Step 2: Convert to fraction form
   9,810.12/14,622.78 = 9,022.80/x
3. Step 3: Cross multiply
   9,810.12x = 14,622.78 × 9,022.80
4. Step 4: Simplify right side
   9,810.12x = 131,938,419.38
5. Step 5: Solve for x
   x = 131,938,419.38/9,810.12
6. Step 6: Final answer
   x = 13,449.22