Finding the Fourth Proportional to 17,183.20, 23,723.34 and 13,196.56

Step by Step Solution

1. Step 1: Write the proportion equation
   17,183.20 : 23,723.34 = 13,196.56 : x
2. Step 2: Convert to fraction form
   17,183.20/23,723.34 = 13,196.56/x
3. Step 3: Cross multiply
   17,183.20x = 23,723.34 × 13,196.56
4. Step 4: Simplify right side
   17,183.20x = 313,066,479.71
5. Step 5: Solve for x
   x = 313,066,479.71/17,183.20
6. Step 6: Final answer
   x = 18,219.34