Finding the Fourth Proportional to 8,940.78, 12,335.42 and 5,957.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,940.78 : 12,335.42 = 5,957.15 : x
2. Step 2: Convert to fraction form
   8,940.78/12,335.42 = 5,957.15/x
3. Step 3: Cross multiply
   8,940.78x = 12,335.42 × 5,957.15
4. Step 4: Simplify right side
   8,940.78x = 73,483,900.47
5. Step 5: Solve for x
   x = 73,483,900.47/8,940.78
6. Step 6: Final answer
   x = 8,218.96