Finding the Fourth Proportional to 7,361.82, 10,159.41 and 4,218

Step by Step Solution

1. Step 1: Write the proportion equation
   7,361.82 : 10,159.41 = 4,218 : x
2. Step 2: Convert to fraction form
   7,361.82/10,159.41 = 4,218/x
3. Step 3: Cross multiply
   7,361.82x = 10,159.41 × 4,218
4. Step 4: Simplify right side
   7,361.82x = 42,852,391.38
5. Step 5: Solve for x
   x = 42,852,391.38/7,361.82
6. Step 6: Final answer
   x = 5,820.90