Finding the Fourth Proportional to 9,131.30, 12,601.22 and 4,939.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.30 : 12,601.22 = 4,939.55 : x
2. Step 2: Convert to fraction form
   9,131.30/12,601.22 = 4,939.55/x
3. Step 3: Cross multiply
   9,131.30x = 12,601.22 × 4,939.55
4. Step 4: Simplify right side
   9,131.30x = 62,244,356.25
5. Step 5: Solve for x
   x = 62,244,356.25/9,131.30
6. Step 6: Final answer
   x = 6,816.59