Finding the Fourth Proportional to 11,866.42, 17,766.82 and 8,935.84

Step by Step Solution

1. Step 1: Write the proportion equation
   11,866.42 : 17,766.82 = 8,935.84 : x
2. Step 2: Convert to fraction form
   11,866.42/17,766.82 = 8,935.84/x
3. Step 3: Cross multiply
   11,866.42x = 17,766.82 × 8,935.84
4. Step 4: Simplify right side
   11,866.42x = 158,761,460.83
5. Step 5: Solve for x
   x = 158,761,460.83/11,866.42
6. Step 6: Final answer
   x = 13,379.05