Finding the Fourth Proportional to 17,456.16, 24,085.40 and 9,900.75

Step by Step Solution

1. Step 1: Write the proportion equation
   17,456.16 : 24,085.40 = 9,900.75 : x
2. Step 2: Convert to fraction form
   17,456.16/24,085.40 = 9,900.75/x
3. Step 3: Cross multiply
   17,456.16x = 24,085.40 × 9,900.75
4. Step 4: Simplify right side
   17,456.16x = 238,463,524.05
5. Step 5: Solve for x
   x = 238,463,524.05/17,456.16
6. Step 6: Final answer
   x = 13,660.71