Finding the Fourth Proportional to 10,643.10, 14,679.83 and 9,224.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,643.10 : 14,679.83 = 9,224.28 : x
2. Step 2: Convert to fraction form
   10,643.10/14,679.83 = 9,224.28/x
3. Step 3: Cross multiply
   10,643.10x = 14,679.83 × 9,224.28
4. Step 4: Simplify right side
   10,643.10x = 135,410,885.33
5. Step 5: Solve for x
   x = 135,410,885.33/10,643.10
6. Step 6: Final answer
   x = 12,722.88