Finding the Fourth Proportional to 10,853.83, 16,267.74 and 5,591.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,853.83 : 16,267.74 = 5,591.35 : x
2. Step 2: Convert to fraction form
   10,853.83/16,267.74 = 5,591.35/x
3. Step 3: Cross multiply
   10,853.83x = 16,267.74 × 5,591.35
4. Step 4: Simplify right side
   10,853.83x = 90,958,628.05
5. Step 5: Solve for x
   x = 90,958,628.05/10,853.83
6. Step 6: Final answer
   x = 8,380.33