Finding the Fourth Proportional to 23,179.87, 31,990.20 and 13,110.10

Step by Step Solution

1. Step 1: Write the proportion equation
   23,179.87 : 31,990.20 = 13,110.10 : x
2. Step 2: Convert to fraction form
   23,179.87/31,990.20 = 13,110.10/x
3. Step 3: Cross multiply
   23,179.87x = 31,990.20 × 13,110.10
4. Step 4: Simplify right side
   23,179.87x = 419,394,495.52
5. Step 5: Solve for x
   x = 419,394,495.52/23,179.87
6. Step 6: Final answer
   x = 18,093.05