Finding the Fourth Proportional to 9,356.48, 12,912.01 and 5,107.62

Step by Step Solution

1. Step 1: Write the proportion equation
   9,356.48 : 12,912.01 = 5,107.62 : x
2. Step 2: Convert to fraction form
   9,356.48/12,912.01 = 5,107.62/x
3. Step 3: Cross multiply
   9,356.48x = 12,912.01 × 5,107.62
4. Step 4: Simplify right side
   9,356.48x = 65,949,676.17
5. Step 5: Solve for x
   x = 65,949,676.17/9,356.48
6. Step 6: Final answer
   x = 7,048.56