Finding the Fourth Proportional to 10,683.86, 16,004.03 and 8,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,683.86 : 16,004.03 = 8,716.50 : x
2. Step 2: Convert to fraction form
   10,683.86/16,004.03 = 8,716.50/x
3. Step 3: Cross multiply
   10,683.86x = 16,004.03 × 8,716.50
4. Step 4: Simplify right side
   10,683.86x = 139,499,127.50
5. Step 5: Solve for x
   x = 139,499,127.50/10,683.86
6. Step 6: Final answer
   x = 13,057.00