Finding the Fourth Proportional to 17,870.22, 24,661.53 and 9,912.78

Step by Step Solution

1. Step 1: Write the proportion equation
   17,870.22 : 24,661.53 = 9,912.78 : x
2. Step 2: Convert to fraction form
   17,870.22/24,661.53 = 9,912.78/x
3. Step 3: Cross multiply
   17,870.22x = 24,661.53 × 9,912.78
4. Step 4: Simplify right side
   17,870.22x = 244,464,321.35
5. Step 5: Solve for x
   x = 244,464,321.35/17,870.22
6. Step 6: Final answer
   x = 13,679.98