Finding the Fourth Proportional to 16,693.79, 23,037.21 and 9,140.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,693.79 : 23,037.21 = 9,140.04 : x
2. Step 2: Convert to fraction form
   16,693.79/23,037.21 = 9,140.04/x
3. Step 3: Cross multiply
   16,693.79x = 23,037.21 × 9,140.04
4. Step 4: Simplify right side
   16,693.79x = 210,561,020.89
5. Step 5: Solve for x
   x = 210,561,020.89/16,693.79
6. Step 6: Final answer
   x = 12,613.14