Finding the Fourth Proportional to 11,980.72, 17,973.81 and 3,661.92

Step by Step Solution

1. Step 1: Write the proportion equation
   11,980.72 : 17,973.81 = 3,661.92 : x
2. Step 2: Convert to fraction form
   11,980.72/17,973.81 = 3,661.92/x
3. Step 3: Cross multiply
   11,980.72x = 17,973.81 × 3,661.92
4. Step 4: Simplify right side
   11,980.72x = 65,818,654.32
5. Step 5: Solve for x
   x = 65,818,654.32/11,980.72
6. Step 6: Final answer
   x = 5,493.71