Finding the Fourth Proportional to 18,111.31, 27,168.69 and 5,627.98

Step by Step Solution

1. Step 1: Write the proportion equation
   18,111.31 : 27,168.69 = 5,627.98 : x
2. Step 2: Convert to fraction form
   18,111.31/27,168.69 = 5,627.98/x
3. Step 3: Cross multiply
   18,111.31x = 27,168.69 × 5,627.98
4. Step 4: Simplify right side
   18,111.31x = 152,904,843.95
5. Step 5: Solve for x
   x = 152,904,843.95/18,111.31
6. Step 6: Final answer
   x = 8,442.51