Finding the Fourth Proportional to 4,015.62, 5,988.69 and 3,434.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,015.62 : 5,988.69 = 3,434.31 : x
2. Step 2: Convert to fraction form
   4,015.62/5,988.69 = 3,434.31/x
3. Step 3: Cross multiply
   4,015.62x = 5,988.69 × 3,434.31
4. Step 4: Simplify right side
   4,015.62x = 20,567,017.95
5. Step 5: Solve for x
   x = 20,567,017.95/4,015.62
6. Step 6: Final answer
   x = 5,121.75