Finding the Fourth Proportional to 11,868.17, 17,796.78 and 6,939.32

Step by Step Solution

1. Step 1: Write the proportion equation
   11,868.17 : 17,796.78 = 6,939.32 : x
2. Step 2: Convert to fraction form
   11,868.17/17,796.78 = 6,939.32/x
3. Step 3: Cross multiply
   11,868.17x = 17,796.78 × 6,939.32
4. Step 4: Simplify right side
   11,868.17x = 123,497,462.41
5. Step 5: Solve for x
   x = 123,497,462.41/11,868.17
6. Step 6: Final answer
   x = 10,405.78