Finding the Fourth Proportional to 17,996.72, 24,822.61 and 15,602.41

Step by Step Solution

1. Step 1: Write the proportion equation
   17,996.72 : 24,822.61 = 15,602.41 : x
2. Step 2: Convert to fraction form
   17,996.72/24,822.61 = 15,602.41/x
3. Step 3: Cross multiply
   17,996.72x = 24,822.61 × 15,602.41
4. Step 4: Simplify right side
   17,996.72x = 387,292,538.49
5. Step 5: Solve for x
   x = 387,292,538.49/17,996.72
6. Step 6: Final answer
   x = 21,520.17