Finding the Fourth Proportional to 10,647.86, 14,669.55 and 8,408.93

Step by Step Solution

1. Step 1: Write the proportion equation
   10,647.86 : 14,669.55 = 8,408.93 : x
2. Step 2: Convert to fraction form
   10,647.86/14,669.55 = 8,408.93/x
3. Step 3: Cross multiply
   10,647.86x = 14,669.55 × 8,408.93
4. Step 4: Simplify right side
   10,647.86x = 123,355,145.73
5. Step 5: Solve for x
   x = 123,355,145.73/10,647.86
6. Step 6: Final answer
   x = 11,584.98