Finding the Fourth Proportional to 12,957.73, 17,890.28 and 9,968.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,957.73 : 17,890.28 = 9,968.29 : x
2. Step 2: Convert to fraction form
   12,957.73/17,890.28 = 9,968.29/x
3. Step 3: Cross multiply
   12,957.73x = 17,890.28 × 9,968.29
4. Step 4: Simplify right side
   12,957.73x = 178,335,499.22
5. Step 5: Solve for x
   x = 178,335,499.22/12,957.73
6. Step 6: Final answer
   x = 13,762.87