Finding the Fourth Proportional to 8,419.27, 12,606.22 and 5,645.83

Step by Step Solution

1. Step 1: Write the proportion equation
   8,419.27 : 12,606.22 = 5,645.83 : x
2. Step 2: Convert to fraction form
   8,419.27/12,606.22 = 5,645.83/x
3. Step 3: Cross multiply
   8,419.27x = 12,606.22 × 5,645.83
4. Step 4: Simplify right side
   8,419.27x = 71,172,575.06
5. Step 5: Solve for x
   x = 71,172,575.06/8,419.27
6. Step 6: Final answer
   x = 8,453.53