Finding the Fourth Proportional to 11,631.87, 17,447.40 and 3,311.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,631.87 : 17,447.40 = 3,311.82 : x
2. Step 2: Convert to fraction form
   11,631.87/17,447.40 = 3,311.82/x
3. Step 3: Cross multiply
   11,631.87x = 17,447.40 × 3,311.82
4. Step 4: Simplify right side
   11,631.87x = 57,782,648.27
5. Step 5: Solve for x
   x = 57,782,648.27/11,631.87
6. Step 6: Final answer
   x = 4,967.61