Finding the Fourth Proportional to 10,940.81, 16,407.77 and 3,543.55

Step by Step Solution

1. Step 1: Write the proportion equation
   10,940.81 : 16,407.77 = 3,543.55 : x
2. Step 2: Convert to fraction form
   10,940.81/16,407.77 = 3,543.55/x
3. Step 3: Cross multiply
   10,940.81x = 16,407.77 × 3,543.55
4. Step 4: Simplify right side
   10,940.81x = 58,141,694.65
5. Step 5: Solve for x
   x = 58,141,694.65/10,940.81
6. Step 6: Final answer
   x = 5,314.21