Finding the Fourth Proportional to 11,476.96, 17,208.56 and 3,978.04

Step by Step Solution

1. Step 1: Write the proportion equation
   11,476.96 : 17,208.56 = 3,978.04 : x
2. Step 2: Convert to fraction form
   11,476.96/17,208.56 = 3,978.04/x
3. Step 3: Cross multiply
   11,476.96x = 17,208.56 × 3,978.04
4. Step 4: Simplify right side
   11,476.96x = 68,456,340.02
5. Step 5: Solve for x
   x = 68,456,340.02/11,476.96
6. Step 6: Final answer
   x = 5,964.68