Finding the Fourth Proportional to 9,920.16, 14,869.76 and 3,590.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,920.16 : 14,869.76 = 3,590.82 : x
2. Step 2: Convert to fraction form
   9,920.16/14,869.76 = 3,590.82/x
3. Step 3: Cross multiply
   9,920.16x = 14,869.76 × 3,590.82
4. Step 4: Simplify right side
   9,920.16x = 53,394,613.65
5. Step 5: Solve for x
   x = 53,394,613.65/9,920.16
6. Step 6: Final answer
   x = 5,382.43