Finding the Fourth Proportional to 8,908.30, 12,293.31 and 4,929.40

Step by Step Solution

1. Step 1: Write the proportion equation
   8,908.30 : 12,293.31 = 4,929.40 : x
2. Step 2: Convert to fraction form
   8,908.30/12,293.31 = 4,929.40/x
3. Step 3: Cross multiply
   8,908.30x = 12,293.31 × 4,929.40
4. Step 4: Simplify right side
   8,908.30x = 60,598,642.31
5. Step 5: Solve for x
   x = 60,598,642.31/8,908.30
6. Step 6: Final answer
   x = 6,802.49