Finding the Fourth Proportional to 11,086.31, 16,627.90 and 3,189.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,086.31 : 16,627.90 = 3,189.50 : x
2. Step 2: Convert to fraction form
   11,086.31/16,627.90 = 3,189.50/x
3. Step 3: Cross multiply
   11,086.31x = 16,627.90 × 3,189.50
4. Step 4: Simplify right side
   11,086.31x = 53,034,603.91
5. Step 5: Solve for x
   x = 53,034,603.91/11,086.31
6. Step 6: Final answer
   x = 4,783.79