Finding the Fourth Proportional to 16,920.50, 25,383.17 and 5,234.63

Step by Step Solution

1. Step 1: Write the proportion equation
   16,920.50 : 25,383.17 = 5,234.63 : x
2. Step 2: Convert to fraction form
   16,920.50/25,383.17 = 5,234.63/x
3. Step 3: Cross multiply
   16,920.50x = 25,383.17 × 5,234.63
4. Step 4: Simplify right side
   16,920.50x = 132,871,389.35
5. Step 5: Solve for x
   x = 132,871,389.35/16,920.50
6. Step 6: Final answer
   x = 7,852.69