Finding the Fourth Proportional to 11,540.04, 17,311.72 and 3,639.87

Step by Step Solution

1. Step 1: Write the proportion equation
   11,540.04 : 17,311.72 = 3,639.87 : x
2. Step 2: Convert to fraction form
   11,540.04/17,311.72 = 3,639.87/x
3. Step 3: Cross multiply
   11,540.04x = 17,311.72 × 3,639.87
4. Step 4: Simplify right side
   11,540.04x = 63,012,410.28
5. Step 5: Solve for x
   x = 63,012,410.28/11,540.04
6. Step 6: Final answer
   x = 5,460.33