Finding the Fourth Proportional to 17,015.67, 23,478.21 and 9,940.73

Step by Step Solution

1. Step 1: Write the proportion equation
   17,015.67 : 23,478.21 = 9,940.73 : x
2. Step 2: Convert to fraction form
   17,015.67/23,478.21 = 9,940.73/x
3. Step 3: Cross multiply
   17,015.67x = 23,478.21 × 9,940.73
4. Step 4: Simplify right side
   17,015.67x = 233,390,429.10
5. Step 5: Solve for x
   x = 233,390,429.10/17,015.67
6. Step 6: Final answer
   x = 13,716.21