Finding the Fourth Proportional to 11,958.96, 17,942.28 and 3,640.59

Step by Step Solution

1. Step 1: Write the proportion equation
   11,958.96 : 17,942.28 = 3,640.59 : x
2. Step 2: Convert to fraction form
   11,958.96/17,942.28 = 3,640.59/x
3. Step 3: Cross multiply
   11,958.96x = 17,942.28 × 3,640.59
4. Step 4: Simplify right side
   11,958.96x = 65,320,432.82
5. Step 5: Solve for x
   x = 65,320,432.82/11,958.96
6. Step 6: Final answer
   x = 5,462.05