Finding the Fourth Proportional to 10,955.80, 16,434.61 and 3,560.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,955.80 : 16,434.61 = 3,560.09 : x
2. Step 2: Convert to fraction form
   10,955.80/16,434.61 = 3,560.09/x
3. Step 3: Cross multiply
   10,955.80x = 16,434.61 × 3,560.09
4. Step 4: Simplify right side
   10,955.80x = 58,508,722.90
5. Step 5: Solve for x
   x = 58,508,722.90/10,955.80
6. Step 6: Final answer
   x = 5,340.43