Finding the Fourth Proportional to 23,180.18, 31,990.27 and 13,108.71

Step by Step Solution

1. Step 1: Write the proportion equation
   23,180.18 : 31,990.27 = 13,108.71 : x
2. Step 2: Convert to fraction form
   23,180.18/31,990.27 = 13,108.71/x
3. Step 3: Cross multiply
   23,180.18x = 31,990.27 × 13,108.71
4. Step 4: Simplify right side
   23,180.18x = 419,351,172.25
5. Step 5: Solve for x
   x = 419,351,172.25/23,180.18
6. Step 6: Final answer
   x = 18,090.94