Finding the Fourth Proportional to 9,375.30, 12,936.78 and 5,183.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,375.30 : 12,936.78 = 5,183.28 : x
2. Step 2: Convert to fraction form
   9,375.30/12,936.78 = 5,183.28/x
3. Step 3: Cross multiply
   9,375.30x = 12,936.78 × 5,183.28
4. Step 4: Simplify right side
   9,375.30x = 67,054,953.04
5. Step 5: Solve for x
   x = 67,054,953.04/9,375.30
6. Step 6: Final answer
   x = 7,152.30