Finding the Fourth Proportional to 10,991.30, 16,489.58 and 3,595.86

Step by Step Solution

1. Step 1: Write the proportion equation
   10,991.30 : 16,489.58 = 3,595.86 : x
2. Step 2: Convert to fraction form
   10,991.30/16,489.58 = 3,595.86/x
3. Step 3: Cross multiply
   10,991.30x = 16,489.58 × 3,595.86
4. Step 4: Simplify right side
   10,991.30x = 59,294,203.16
5. Step 5: Solve for x
   x = 59,294,203.16/10,991.30
6. Step 6: Final answer
   x = 5,394.65