Finding the Fourth Proportional to 17,271.72, 23,871.78 and 15,224.04

Step by Step Solution

1. Step 1: Write the proportion equation
   17,271.72 : 23,871.78 = 15,224.04 : x
2. Step 2: Convert to fraction form
   17,271.72/23,871.78 = 15,224.04/x
3. Step 3: Cross multiply
   17,271.72x = 23,871.78 × 15,224.04
4. Step 4: Simplify right side
   17,271.72x = 363,424,933.59
5. Step 5: Solve for x
   x = 363,424,933.59/17,271.72
6. Step 6: Final answer
   x = 21,041.62