Finding the Fourth Proportional to 8,898.30, 12,280.29 and 4,919.34

Step by Step Solution

1. Step 1: Write the proportion equation
   8,898.30 : 12,280.29 = 4,919.34 : x
2. Step 2: Convert to fraction form
   8,898.30/12,280.29 = 4,919.34/x
3. Step 3: Cross multiply
   8,898.30x = 12,280.29 × 4,919.34
4. Step 4: Simplify right side
   8,898.30x = 60,410,860.41
5. Step 5: Solve for x
   x = 60,410,860.41/8,898.30
6. Step 6: Final answer
   x = 6,789.03