Finding the Fourth Proportional to 10,560.96, 15,843.60 and 3,540.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,560.96 : 15,843.60 = 3,540.15 : x
2. Step 2: Convert to fraction form
   10,560.96/15,843.60 = 3,540.15/x
3. Step 3: Cross multiply
   10,560.96x = 15,843.60 × 3,540.15
4. Step 4: Simplify right side
   10,560.96x = 56,088,720.54
5. Step 5: Solve for x
   x = 56,088,720.54/10,560.96
6. Step 6: Final answer
   x = 5,310.95