Finding the Fourth Proportional to 17,222.50, 23,765.70 and 9,667.78

Step by Step Solution

1. Step 1: Write the proportion equation
   17,222.50 : 23,765.70 = 9,667.78 : x
2. Step 2: Convert to fraction form
   17,222.50/23,765.70 = 9,667.78/x
3. Step 3: Cross multiply
   17,222.50x = 23,765.70 × 9,667.78
4. Step 4: Simplify right side
   17,222.50x = 229,761,559.15
5. Step 5: Solve for x
   x = 229,761,559.15/17,222.50
6. Step 6: Final answer
   x = 13,340.78