Finding the Fourth Proportional to 10,559.98, 15,843.49 and 3,540.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,559.98 : 15,843.49 = 3,540.69 : x
2. Step 2: Convert to fraction form
   10,559.98/15,843.49 = 3,540.69/x
3. Step 3: Cross multiply
   10,559.98x = 15,843.49 × 3,540.69
4. Step 4: Simplify right side
   10,559.98x = 56,096,789.69
5. Step 5: Solve for x
   x = 56,096,789.69/10,559.98
6. Step 6: Final answer
   x = 5,312.21