Finding the Fourth Proportional to 16,520.96, 24,781.49 and 5,428.52

Step by Step Solution

1. Step 1: Write the proportion equation
   16,520.96 : 24,781.49 = 5,428.52 : x
2. Step 2: Convert to fraction form
   16,520.96/24,781.49 = 5,428.52/x
3. Step 3: Cross multiply
   16,520.96x = 24,781.49 × 5,428.52
4. Step 4: Simplify right side
   16,520.96x = 134,526,806.87
5. Step 5: Solve for x
   x = 134,526,806.87/16,520.96
6. Step 6: Final answer
   x = 8,142.79