Finding the Fourth Proportional to 7,049.31, 9,718.78 and 5,855.37

Step by Step Solution

1. Step 1: Write the proportion equation
   7,049.31 : 9,718.78 = 5,855.37 : x
2. Step 2: Convert to fraction form
   7,049.31/9,718.78 = 5,855.37/x
3. Step 3: Cross multiply
   7,049.31x = 9,718.78 × 5,855.37
4. Step 4: Simplify right side
   7,049.31x = 56,907,052.85
5. Step 5: Solve for x
   x = 56,907,052.85/7,049.31
6. Step 6: Final answer
   x = 8,072.71