Finding the Fourth Proportional to 10,991.68, 16,489.60 and 3,595.52

Step by Step Solution

1. Step 1: Write the proportion equation
   10,991.68 : 16,489.60 = 3,595.52 : x
2. Step 2: Convert to fraction form
   10,991.68/16,489.60 = 3,595.52/x
3. Step 3: Cross multiply
   10,991.68x = 16,489.60 × 3,595.52
4. Step 4: Simplify right side
   10,991.68x = 59,288,686.59
5. Step 5: Solve for x
   x = 59,288,686.59/10,991.68
6. Step 6: Final answer
   x = 5,393.96