Finding the Fourth Proportional to 8,488.94, 12,716.82 and 5,558.36

Step by Step Solution

1. Step 1: Write the proportion equation
   8,488.94 : 12,716.82 = 5,558.36 : x
2. Step 2: Convert to fraction form
   8,488.94/12,716.82 = 5,558.36/x
3. Step 3: Cross multiply
   8,488.94x = 12,716.82 × 5,558.36
4. Step 4: Simplify right side
   8,488.94x = 70,684,600.03
5. Step 5: Solve for x
   x = 70,684,600.03/8,488.94
6. Step 6: Final answer
   x = 8,326.67