Finding the Fourth Proportional to 16,755, 23,126.72 and 13,421.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,755 : 23,126.72 = 13,421.04 : x
2. Step 2: Convert to fraction form
   16,755/23,126.72 = 13,421.04/x
3. Step 3: Cross multiply
   16,755x = 23,126.72 × 13,421.04
4. Step 4: Simplify right side
   16,755x = 310,384,634.19
5. Step 5: Solve for x
   x = 310,384,634.19/16,755
6. Step 6: Final answer
   x = 18,524.90