Finding the Fourth Proportional to 9,131.29, 12,601.20 and 4,939.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.29 : 12,601.20 = 4,939.54 : x
2. Step 2: Convert to fraction form
   9,131.29/12,601.20 = 4,939.54/x
3. Step 3: Cross multiply
   9,131.29x = 12,601.20 × 4,939.54
4. Step 4: Simplify right side
   9,131.29x = 62,244,131.45
5. Step 5: Solve for x
   x = 62,244,131.45/9,131.29
6. Step 6: Final answer
   x = 6,816.58