Finding the Fourth Proportional to 10,812.79, 16,222.83 and 10,739.89

Step by Step Solution

1. Step 1: Write the proportion equation
   10,812.79 : 16,222.83 = 10,739.89 : x
2. Step 2: Convert to fraction form
   10,812.79/16,222.83 = 10,739.89/x
3. Step 3: Cross multiply
   10,812.79x = 16,222.83 × 10,739.89
4. Step 4: Simplify right side
   10,812.79x = 174,231,409.69
5. Step 5: Solve for x
   x = 174,231,409.69/10,812.79
6. Step 6: Final answer
   x = 16,113.46