Finding the Fourth Proportional to 5,590.90, 8,368.82 and 3,613.90

Step by Step Solution

1. Step 1: Write the proportion equation
   5,590.90 : 8,368.82 = 3,613.90 : x
2. Step 2: Convert to fraction form
   5,590.90/8,368.82 = 3,613.90/x
3. Step 3: Cross multiply
   5,590.90x = 8,368.82 × 3,613.90
4. Step 4: Simplify right side
   5,590.90x = 30,244,078.60
5. Step 5: Solve for x
   x = 30,244,078.60/5,590.90
6. Step 6: Final answer
   x = 5,409.52