Finding the Fourth Proportional to 12,111.82, 18,170.36 and 5,087.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.82 : 18,170.36 = 5,087.83 : x
2. Step 2: Convert to fraction form
   12,111.82/18,170.36 = 5,087.83/x
3. Step 3: Cross multiply
   12,111.82x = 18,170.36 × 5,087.83
4. Step 4: Simplify right side
   12,111.82x = 92,447,702.72
5. Step 5: Solve for x
   x = 92,447,702.72/12,111.82
6. Step 6: Final answer
   x = 7,632.85