Finding the Fourth Proportional to 23,015.96, 31,760.67 and 12,806.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,015.96 : 31,760.67 = 12,806.72 : x
2. Step 2: Convert to fraction form
   23,015.96/31,760.67 = 12,806.72/x
3. Step 3: Cross multiply
   23,015.96x = 31,760.67 × 12,806.72
4. Step 4: Simplify right side
   23,015.96x = 406,750,007.70
5. Step 5: Solve for x
   x = 406,750,007.70/23,015.96
6. Step 6: Final answer
   x = 17,672.52