Finding the Fourth Proportional to 10,565.59, 15,837.39 and 3,540.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,565.59 : 15,837.39 = 3,540.31 : x
2. Step 2: Convert to fraction form
   10,565.59/15,837.39 = 3,540.31/x
3. Step 3: Cross multiply
   10,565.59x = 15,837.39 × 3,540.31
4. Step 4: Simplify right side
   10,565.59x = 56,069,270.19
5. Step 5: Solve for x
   x = 56,069,270.19/10,565.59
6. Step 6: Final answer
   x = 5,306.78