Finding the Fourth Proportional to 17,870.53, 24,661.44 and 9,912.88

Step by Step Solution

1. Step 1: Write the proportion equation
   17,870.53 : 24,661.44 = 9,912.88 : x
2. Step 2: Convert to fraction form
   17,870.53/24,661.44 = 9,912.88/x
3. Step 3: Cross multiply
   17,870.53x = 24,661.44 × 9,912.88
4. Step 4: Simplify right side
   17,870.53x = 244,465,895.35
5. Step 5: Solve for x
   x = 244,465,895.35/17,870.53
6. Step 6: Final answer
   x = 13,679.83