Finding the Fourth Proportional to 17,120.15, 23,571.29 and 15,101.83

Step by Step Solution

1. Step 1: Write the proportion equation
   17,120.15 : 23,571.29 = 15,101.83 : x
2. Step 2: Convert to fraction form
   17,120.15/23,571.29 = 15,101.83/x
3. Step 3: Cross multiply
   17,120.15x = 23,571.29 × 15,101.83
4. Step 4: Simplify right side
   17,120.15x = 355,969,421.10
5. Step 5: Solve for x
   x = 355,969,421.10/17,120.15
6. Step 6: Final answer
   x = 20,792.43