Finding the Fourth Proportional to 8,899.41, 12,280.71 and 4,920.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,899.41 : 12,280.71 = 4,920.27 : x
2. Step 2: Convert to fraction form
   8,899.41/12,280.71 = 4,920.27/x
3. Step 3: Cross multiply
   8,899.41x = 12,280.71 × 4,920.27
4. Step 4: Simplify right side
   8,899.41x = 60,424,408.99
5. Step 5: Solve for x
   x = 60,424,408.99/8,899.41
6. Step 6: Final answer
   x = 6,789.71