Finding the Fourth Proportional to 10,578.42, 15,869.38 and 3,559.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,578.42 : 15,869.38 = 3,559.06 : x
2. Step 2: Convert to fraction form
   10,578.42/15,869.38 = 3,559.06/x
3. Step 3: Cross multiply
   10,578.42x = 15,869.38 × 3,559.06
4. Step 4: Simplify right side
   10,578.42x = 56,480,075.58
5. Step 5: Solve for x
   x = 56,480,075.58/10,578.42
6. Step 6: Final answer
   x = 5,339.18