Finding the Fourth Proportional to 16,920.72, 25,380.77 and 5,827.17

Step by Step Solution

1. Step 1: Write the proportion equation
   16,920.72 : 25,380.77 = 5,827.17 : x
2. Step 2: Convert to fraction form
   16,920.72/25,380.77 = 5,827.17/x
3. Step 3: Cross multiply
   16,920.72x = 25,380.77 × 5,827.17
4. Step 4: Simplify right side
   16,920.72x = 147,897,929.80
5. Step 5: Solve for x
   x = 147,897,929.80/16,920.72
6. Step 6: Final answer
   x = 8,740.64