Finding the Fourth Proportional to 9,786.15, 14,607.61 and 8,408.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,786.15 : 14,607.61 = 8,408.34 : x
2. Step 2: Convert to fraction form
   9,786.15/14,607.61 = 8,408.34/x
3. Step 3: Cross multiply
   9,786.15x = 14,607.61 × 8,408.34
4. Step 4: Simplify right side
   9,786.15x = 122,825,730.45
5. Step 5: Solve for x
   x = 122,825,730.45/9,786.15
6. Step 6: Final answer
   x = 12,550.98