Finding the Fourth Proportional to 11,189.55, 16,788.87 and 5,644.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,189.55 : 16,788.87 = 5,644.50 : x
2. Step 2: Convert to fraction form
   11,189.55/16,788.87 = 5,644.50/x
3. Step 3: Cross multiply
   11,189.55x = 16,788.87 × 5,644.50
4. Step 4: Simplify right side
   11,189.55x = 94,764,776.72
5. Step 5: Solve for x
   x = 94,764,776.72/11,189.55
6. Step 6: Final answer
   x = 8,469.04