Finding the Fourth Proportional to 11,769.27, 17,653.36 and 3,978.15

Step by Step Solution

1. Step 1: Write the proportion equation
   11,769.27 : 17,653.36 = 3,978.15 : x
2. Step 2: Convert to fraction form
   11,769.27/17,653.36 = 3,978.15/x
3. Step 3: Cross multiply
   11,769.27x = 17,653.36 × 3,978.15
4. Step 4: Simplify right side
   11,769.27x = 70,227,714.08
5. Step 5: Solve for x
   x = 70,227,714.08/11,769.27
6. Step 6: Final answer
   x = 5,967.04