Finding the Fourth Proportional to 8,916.81, 12,304.89 and 4,938.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,916.81 : 12,304.89 = 4,938.09 : x
2. Step 2: Convert to fraction form
   8,916.81/12,304.89 = 4,938.09/x
3. Step 3: Cross multiply
   8,916.81x = 12,304.89 × 4,938.09
4. Step 4: Simplify right side
   8,916.81x = 60,762,654.26
5. Step 5: Solve for x
   x = 60,762,654.26/8,916.81
6. Step 6: Final answer
   x = 6,814.39