Finding the Fourth Proportional to 11,789.36, 17,677.56 and 3,995.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,789.36 : 17,677.56 = 3,995.12 : x
2. Step 2: Convert to fraction form
   11,789.36/17,677.56 = 3,995.12/x
3. Step 3: Cross multiply
   11,789.36x = 17,677.56 × 3,995.12
4. Step 4: Simplify right side
   11,789.36x = 70,623,973.51
5. Step 5: Solve for x
   x = 70,623,973.51/11,789.36
6. Step 6: Final answer
   x = 5,990.48