Finding the Fourth Proportional to 8,939.56, 12,330.94 and 5,757.01

Step by Step Solution

1. Step 1: Write the proportion equation
   8,939.56 : 12,330.94 = 5,757.01 : x
2. Step 2: Convert to fraction form
   8,939.56/12,330.94 = 5,757.01/x
3. Step 3: Cross multiply
   8,939.56x = 12,330.94 × 5,757.01
4. Step 4: Simplify right side
   8,939.56x = 70,989,344.89
5. Step 5: Solve for x
   x = 70,989,344.89/8,939.56
6. Step 6: Final answer
   x = 7,941.03