Finding the Fourth Proportional to 8,898.14, 12,280.17 and 4,920.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,898.14 : 12,280.17 = 4,920.54 : x
2. Step 2: Convert to fraction form
   8,898.14/12,280.17 = 4,920.54/x
3. Step 3: Cross multiply
   8,898.14x = 12,280.17 × 4,920.54
4. Step 4: Simplify right side
   8,898.14x = 60,425,067.69
5. Step 5: Solve for x
   x = 60,425,067.69/8,898.14
6. Step 6: Final answer
   x = 6,790.75