Finding the Fourth Proportional to 8,102.67, 12,158.79 and 3,422.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,102.67 : 12,158.79 = 3,422.38 : x
2. Step 2: Convert to fraction form
   8,102.67/12,158.79 = 3,422.38/x
3. Step 3: Cross multiply
   8,102.67x = 12,158.79 × 3,422.38
4. Step 4: Simplify right side
   8,102.67x = 41,611,999.72
5. Step 5: Solve for x
   x = 41,611,999.72/8,102.67
6. Step 6: Final answer
   x = 5,135.59