Finding the Fourth Proportional to 11,272.05, 16,907.67 and 3,480.87

Step by Step Solution

1. Step 1: Write the proportion equation
   11,272.05 : 16,907.67 = 3,480.87 : x
2. Step 2: Convert to fraction form
   11,272.05/16,907.67 = 3,480.87/x
3. Step 3: Cross multiply
   11,272.05x = 16,907.67 × 3,480.87
4. Step 4: Simplify right side
   11,272.05x = 58,853,401.27
5. Step 5: Solve for x
   x = 58,853,401.27/11,272.05
6. Step 6: Final answer
   x = 5,221.18