Finding the Fourth Proportional to 11,983.86, 17,973.54 and 3,661.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,983.86 : 17,973.54 = 3,661.62 : x
2. Step 2: Convert to fraction form
   11,983.86/17,973.54 = 3,661.62/x
3. Step 3: Cross multiply
   11,983.86x = 17,973.54 × 3,661.62
4. Step 4: Simplify right side
   11,983.86x = 65,812,273.53
5. Step 5: Solve for x
   x = 65,812,273.53/11,983.86
6. Step 6: Final answer
   x = 5,491.74