Finding the Fourth Proportional to 11,961.86, 17,943.78 and 3,642.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,961.86 : 17,943.78 = 3,642.62 : x
2. Step 2: Convert to fraction form
   11,961.86/17,943.78 = 3,642.62/x
3. Step 3: Cross multiply
   11,961.86x = 17,943.78 × 3,642.62
4. Step 4: Simplify right side
   11,961.86x = 65,362,371.90
5. Step 5: Solve for x
   x = 65,362,371.90/11,961.86
6. Step 6: Final answer
   x = 5,464.23