Finding the Fourth Proportional to 3,462.69, 5,185.80 and 3,290.43

Step by Step Solution

1. Step 1: Write the proportion equation
   3,462.69 : 5,185.80 = 3,290.43 : x
2. Step 2: Convert to fraction form
   3,462.69/5,185.80 = 3,290.43/x
3. Step 3: Cross multiply
   3,462.69x = 5,185.80 × 3,290.43
4. Step 4: Simplify right side
   3,462.69x = 17,063,511.89
5. Step 5: Solve for x
   x = 17,063,511.89/3,462.69
6. Step 6: Final answer
   x = 4,927.82