Finding the Fourth Proportional to 10,991.18, 16,488.81 and 3,596.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,991.18 : 16,488.81 = 3,596.04 : x
2. Step 2: Convert to fraction form
   10,991.18/16,488.81 = 3,596.04/x
3. Step 3: Cross multiply
   10,991.18x = 16,488.81 × 3,596.04
4. Step 4: Simplify right side
   10,991.18x = 59,294,420.31
5. Step 5: Solve for x
   x = 59,294,420.31/10,991.18
6. Step 6: Final answer
   x = 5,394.73