Finding the Fourth Proportional to 8,919.05, 12,308.29 and 4,940.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,919.05 : 12,308.29 = 4,940.42 : x
2. Step 2: Convert to fraction form
   8,919.05/12,308.29 = 4,940.42/x
3. Step 3: Cross multiply
   8,919.05x = 12,308.29 × 4,940.42
4. Step 4: Simplify right side
   8,919.05x = 60,808,038.93
5. Step 5: Solve for x
   x = 60,808,038.93/8,919.05
6. Step 6: Final answer
   x = 6,817.77