Finding the Fourth Proportional to 23,016.96, 31,762.05 and 12,807.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,016.96 : 31,762.05 = 12,807.72 : x
2. Step 2: Convert to fraction form
   23,016.96/31,762.05 = 12,807.72/x
3. Step 3: Cross multiply
   23,016.96x = 31,762.05 × 12,807.72
4. Step 4: Simplify right side
   23,016.96x = 406,799,443.03
5. Step 5: Solve for x
   x = 406,799,443.03/23,016.96
6. Step 6: Final answer
   x = 17,673.90