Finding the Fourth Proportional to 10,662.80, 15,969.48 and 10,293.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,662.80 : 15,969.48 = 10,293.68 : x
2. Step 2: Convert to fraction form
   10,662.80/15,969.48 = 10,293.68/x
3. Step 3: Cross multiply
   10,662.80x = 15,969.48 × 10,293.68
4. Step 4: Simplify right side
   10,662.80x = 164,384,716.89
5. Step 5: Solve for x
   x = 164,384,716.89/10,662.80
6. Step 6: Final answer
   x = 15,416.66