Finding the Fourth Proportional to 9,357.61, 12,912.95 and 5,107.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,357.61 : 12,912.95 = 5,107.82 : x
2. Step 2: Convert to fraction form
   9,357.61/12,912.95 = 5,107.82/x
3. Step 3: Cross multiply
   9,357.61x = 12,912.95 × 5,107.82
4. Step 4: Simplify right side
   9,357.61x = 65,957,031.01
5. Step 5: Solve for x
   x = 65,957,031.01/9,357.61
6. Step 6: Final answer
   x = 7,048.49