Finding the Fourth Proportional to 23,116.29, 31,904.39 and 13,424.23

Step by Step Solution

1. Step 1: Write the proportion equation
   23,116.29 : 31,904.39 = 13,424.23 : x
2. Step 2: Convert to fraction form
   23,116.29/31,904.39 = 13,424.23/x
3. Step 3: Cross multiply
   23,116.29x = 31,904.39 × 13,424.23
4. Step 4: Simplify right side
   23,116.29x = 428,291,869.37
5. Step 5: Solve for x
   x = 428,291,869.37/23,116.29
6. Step 6: Final answer
   x = 18,527.71