Finding the Fourth Proportional to 16,521.28, 24,784.65 and 5,425.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,521.28 : 24,784.65 = 5,425.49 : x
2. Step 2: Convert to fraction form
   16,521.28/24,784.65 = 5,425.49/x
3. Step 3: Cross multiply
   16,521.28x = 24,784.65 × 5,425.49
4. Step 4: Simplify right side
   16,521.28x = 134,468,932.69
5. Step 5: Solve for x
   x = 134,468,932.69/16,521.28
6. Step 6: Final answer
   x = 8,139.14