Finding the Fourth Proportional to 9,462.18, 12,963.25 and 9,107.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,462.18 : 12,963.25 = 9,107.48 : x
2. Step 2: Convert to fraction form
   9,462.18/12,963.25 = 9,107.48/x
3. Step 3: Cross multiply
   9,462.18x = 12,963.25 × 9,107.48
4. Step 4: Simplify right side
   9,462.18x = 118,062,583.90
5. Step 5: Solve for x
   x = 118,062,583.90/9,462.18
6. Step 6: Final answer
   x = 12,477.31