Finding the Fourth Proportional to 8,494.31, 12,742.55 and 4,938.09

Step by Step Solution

1. Step 1: Write the proportion equation
   8,494.31 : 12,742.55 = 4,938.09 : x
2. Step 2: Convert to fraction form
   8,494.31/12,742.55 = 4,938.09/x
3. Step 3: Cross multiply
   8,494.31x = 12,742.55 × 4,938.09
4. Step 4: Simplify right side
   8,494.31x = 62,923,834.04
5. Step 5: Solve for x
   x = 62,923,834.04/8,494.31
6. Step 6: Final answer
   x = 7,407.77