Finding the Fourth Proportional to 3,606.16, 4,999.42 and 3,418.80

Step by Step Solution

1. Step 1: Write the proportion equation
   3,606.16 : 4,999.42 = 3,418.80 : x
2. Step 2: Convert to fraction form
   3,606.16/4,999.42 = 3,418.80/x
3. Step 3: Cross multiply
   3,606.16x = 4,999.42 × 3,418.80
4. Step 4: Simplify right side
   3,606.16x = 17,092,017.10
5. Step 5: Solve for x
   x = 17,092,017.10/3,606.16
6. Step 6: Final answer
   x = 4,739.67