Finding the Fourth Proportional to 16,747.89, 25,126.47 and 13,620.17

Step by Step Solution

1. Step 1: Write the proportion equation
   16,747.89 : 25,126.47 = 13,620.17 : x
2. Step 2: Convert to fraction form
   16,747.89/25,126.47 = 13,620.17/x
3. Step 3: Cross multiply
   16,747.89x = 25,126.47 × 13,620.17
4. Step 4: Simplify right side
   16,747.89x = 342,226,667.27
5. Step 5: Solve for x
   x = 342,226,667.27/16,747.89
6. Step 6: Final answer
   x = 20,434.02