Finding the Fourth Proportional to 9,138.55, 13,713.31 and 3,944.42

Step by Step Solution

1. Step 1: Write the proportion equation
   9,138.55 : 13,713.31 = 3,944.42 : x
2. Step 2: Convert to fraction form
   9,138.55/13,713.31 = 3,944.42/x
3. Step 3: Cross multiply
   9,138.55x = 13,713.31 × 3,944.42
4. Step 4: Simplify right side
   9,138.55x = 54,091,054.23
5. Step 5: Solve for x
   x = 54,091,054.23/9,138.55
6. Step 6: Final answer
   x = 5,919.00