Finding the Fourth Proportional to 10,486.71, 15,726.56 and 3,559.59

Step by Step Solution

1. Step 1: Write the proportion equation
   10,486.71 : 15,726.56 = 3,559.59 : x
2. Step 2: Convert to fraction form
   10,486.71/15,726.56 = 3,559.59/x
3. Step 3: Cross multiply
   10,486.71x = 15,726.56 × 3,559.59
4. Step 4: Simplify right side
   10,486.71x = 55,980,087.91
5. Step 5: Solve for x
   x = 55,980,087.91/10,486.71
6. Step 6: Final answer
   x = 5,338.19