Finding the Fourth Proportional to 23,181.84, 31,991.76 and 13,111.38

Step by Step Solution

1. Step 1: Write the proportion equation
   23,181.84 : 31,991.76 = 13,111.38 : x
2. Step 2: Convert to fraction form
   23,181.84/31,991.76 = 13,111.38/x
3. Step 3: Cross multiply
   23,181.84x = 31,991.76 × 13,111.38
4. Step 4: Simplify right side
   23,181.84x = 419,456,122.23
5. Step 5: Solve for x
   x = 419,456,122.23/23,181.84
6. Step 6: Final answer
   x = 18,094.17