Finding the Fourth Proportional to 10,559.99, 15,837.49 and 3,540.26

Step by Step Solution

1. Step 1: Write the proportion equation
   10,559.99 : 15,837.49 = 3,540.26 : x
2. Step 2: Convert to fraction form
   10,559.99/15,837.49 = 3,540.26/x
3. Step 3: Cross multiply
   10,559.99x = 15,837.49 × 3,540.26
4. Step 4: Simplify right side
   10,559.99x = 56,068,832.35
5. Step 5: Solve for x
   x = 56,068,832.35/10,559.99
6. Step 6: Final answer
   x = 5,309.55