Finding the Fourth Proportional to 9,131.68, 12,601.72 and 4,939.94

Step by Step Solution

1. Step 1: Write the proportion equation
   9,131.68 : 12,601.72 = 4,939.94 : x
2. Step 2: Convert to fraction form
   9,131.68/12,601.72 = 4,939.94/x
3. Step 3: Cross multiply
   9,131.68x = 12,601.72 × 4,939.94
4. Step 4: Simplify right side
   9,131.68x = 62,251,740.70
5. Step 5: Solve for x
   x = 62,251,740.70/9,131.68
6. Step 6: Final answer
   x = 6,817.12