Finding the Fourth Proportional to 16,518.72, 24,720.54 and 13,522.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,518.72 : 24,720.54 = 13,522.56 : x
2. Step 2: Convert to fraction form
   16,518.72/24,720.54 = 13,522.56/x
3. Step 3: Cross multiply
   16,518.72x = 24,720.54 × 13,522.56
4. Step 4: Simplify right side
   16,518.72x = 334,284,985.38
5. Step 5: Solve for x
   x = 334,284,985.38/16,518.72
6. Step 6: Final answer
   x = 20,236.74