Finding the Fourth Proportional to 9,311.37, 12,847.59 and 5,537.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,311.37 : 12,847.59 = 5,537.31 : x
2. Step 2: Convert to fraction form
   9,311.37/12,847.59 = 5,537.31/x
3. Step 3: Cross multiply
   9,311.37x = 12,847.59 × 5,537.31
4. Step 4: Simplify right side
   9,311.37x = 71,141,088.58
5. Step 5: Solve for x
   x = 71,141,088.58/9,311.37
6. Step 6: Final answer
   x = 7,640.24