Finding the Fourth Proportional to 18,290.14, 27,436.83 and 5,142.62

Step by Step Solution

1. Step 1: Write the proportion equation
   18,290.14 : 27,436.83 = 5,142.62 : x
2. Step 2: Convert to fraction form
   18,290.14/27,436.83 = 5,142.62/x
3. Step 3: Cross multiply
   18,290.14x = 27,436.83 × 5,142.62
4. Step 4: Simplify right side
   18,290.14x = 141,097,164.98
5. Step 5: Solve for x
   x = 141,097,164.98/18,290.14
6. Step 6: Final answer
   x = 7,714.39