Finding the Fourth Proportional to 18,131.34, 27,189.62 and 5,647.18

Step by Step Solution

1. Step 1: Write the proportion equation
   18,131.34 : 27,189.62 = 5,647.18 : x
2. Step 2: Convert to fraction form
   18,131.34/27,189.62 = 5,647.18/x
3. Step 3: Cross multiply
   18,131.34x = 27,189.62 × 5,647.18
4. Step 4: Simplify right side
   18,131.34x = 153,544,678.27
5. Step 5: Solve for x
   x = 153,544,678.27/18,131.34
6. Step 6: Final answer
   x = 8,468.47