Finding the Fourth Proportional to 10,959.31, 16,439.87 and 3,563.60

Step by Step Solution

1. Step 1: Write the proportion equation
   10,959.31 : 16,439.87 = 3,563.60 : x
2. Step 2: Convert to fraction form
   10,959.31/16,439.87 = 3,563.60/x
3. Step 3: Cross multiply
   10,959.31x = 16,439.87 × 3,563.60
4. Step 4: Simplify right side
   10,959.31x = 58,585,120.73
5. Step 5: Solve for x
   x = 58,585,120.73/10,959.31
6. Step 6: Final answer
   x = 5,345.69