Finding the Fourth Proportional to 10,411.91, 15,613.78 and 3,390.22

Step by Step Solution

1. Step 1: Write the proportion equation
   10,411.91 : 15,613.78 = 3,390.22 : x
2. Step 2: Convert to fraction form
   10,411.91/15,613.78 = 3,390.22/x
3. Step 3: Cross multiply
   10,411.91x = 15,613.78 × 3,390.22
4. Step 4: Simplify right side
   10,411.91x = 52,934,149.23
5. Step 5: Solve for x
   x = 52,934,149.23/10,411.91
6. Step 6: Final answer
   x = 5,084.00