Finding the Fourth Proportional to 4,061.40, 5,590.18 and 3,390.68

Step by Step Solution

1. Step 1: Write the proportion equation
   4,061.40 : 5,590.18 = 3,390.68 : x
2. Step 2: Convert to fraction form
   4,061.40/5,590.18 = 3,390.68/x
3. Step 3: Cross multiply
   4,061.40x = 5,590.18 × 3,390.68
4. Step 4: Simplify right side
   4,061.40x = 18,954,511.52
5. Step 5: Solve for x
   x = 18,954,511.52/4,061.40
6. Step 6: Final answer
   x = 4,666.99