Finding the Fourth Proportional to 7,131.08, 9,840.72 and 3,944.29

Step by Step Solution

1. Step 1: Write the proportion equation
   7,131.08 : 9,840.72 = 3,944.29 : x
2. Step 2: Convert to fraction form
   7,131.08/9,840.72 = 3,944.29/x
3. Step 3: Cross multiply
   7,131.08x = 9,840.72 × 3,944.29
4. Step 4: Simplify right side
   7,131.08x = 38,814,653.49
5. Step 5: Solve for x
   x = 38,814,653.49/7,131.08
6. Step 6: Final answer
   x = 5,443.03