Finding the Fourth Proportional to 10,991.35, 16,488.24 and 3,596.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,991.35 : 16,488.24 = 3,596.05 : x
2. Step 2: Convert to fraction form
   10,991.35/16,488.24 = 3,596.05/x
3. Step 3: Cross multiply
   10,991.35x = 16,488.24 × 3,596.05
4. Step 4: Simplify right side
   10,991.35x = 59,292,535.45
5. Step 5: Solve for x
   x = 59,292,535.45/10,991.35
6. Step 6: Final answer
   x = 5,394.47