Finding the Fourth Proportional to 8,709.39, 12,022.02 and 5,357.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,709.39 : 12,022.02 = 5,357.88 : x
2. Step 2: Convert to fraction form
   8,709.39/12,022.02 = 5,357.88/x
3. Step 3: Cross multiply
   8,709.39x = 12,022.02 × 5,357.88
4. Step 4: Simplify right side
   8,709.39x = 64,412,540.52
5. Step 5: Solve for x
   x = 64,412,540.52/8,709.39
6. Step 6: Final answer
   x = 7,395.76