Finding the Fourth Proportional to 11,392.56, 17,091.36 and 3,996.72

Step by Step Solution

1. Step 1: Write the proportion equation
   11,392.56 : 17,091.36 = 3,996.72 : x
2. Step 2: Convert to fraction form
   11,392.56/17,091.36 = 3,996.72/x
3. Step 3: Cross multiply
   11,392.56x = 17,091.36 × 3,996.72
4. Step 4: Simplify right side
   11,392.56x = 68,309,380.34
5. Step 5: Solve for x
   x = 68,309,380.34/11,392.56
6. Step 6: Final answer
   x = 5,995.96