Finding the Fourth Proportional to 11,978.38, 17,975.25 and 8,034.09

Step by Step Solution

1. Step 1: Write the proportion equation
   11,978.38 : 17,975.25 = 8,034.09 : x
2. Step 2: Convert to fraction form
   11,978.38/17,975.25 = 8,034.09/x
3. Step 3: Cross multiply
   11,978.38x = 17,975.25 × 8,034.09
4. Step 4: Simplify right side
   11,978.38x = 144,414,776.27
5. Step 5: Solve for x
   x = 144,414,776.27/11,978.38
6. Step 6: Final answer
   x = 12,056.29