Finding the Fourth Proportional to 18,111.91, 24,972.72 and 11,736.17

Step by Step Solution

1. Step 1: Write the proportion equation
   18,111.91 : 24,972.72 = 11,736.17 : x
2. Step 2: Convert to fraction form
   18,111.91/24,972.72 = 11,736.17/x
3. Step 3: Cross multiply
   18,111.91x = 24,972.72 × 11,736.17
4. Step 4: Simplify right side
   18,111.91x = 293,084,218.54
5. Step 5: Solve for x
   x = 293,084,218.54/18,111.91
6. Step 6: Final answer
   x = 16,181.85