Finding the Fourth Proportional to 5,168.50, 7,136.56 and 3,179.94

Step by Step Solution

1. Step 1: Write the proportion equation
   5,168.50 : 7,136.56 = 3,179.94 : x
2. Step 2: Convert to fraction form
   5,168.50/7,136.56 = 3,179.94/x
3. Step 3: Cross multiply
   5,168.50x = 7,136.56 × 3,179.94
4. Step 4: Simplify right side
   5,168.50x = 22,693,832.61
5. Step 5: Solve for x
   x = 22,693,832.61/5,168.50
6. Step 6: Final answer
   x = 4,390.80