Finding the Fourth Proportional to 11,868.42, 17,809.32 and 8,173.61

Step by Step Solution

1. Step 1: Write the proportion equation
   11,868.42 : 17,809.32 = 8,173.61 : x
2. Step 2: Convert to fraction form
   11,868.42/17,809.32 = 8,173.61/x
3. Step 3: Cross multiply
   11,868.42x = 17,809.32 × 8,173.61
4. Step 4: Simplify right side
   11,868.42x = 145,566,326.56
5. Step 5: Solve for x
   x = 145,566,326.56/11,868.42
6. Step 6: Final answer
   x = 12,265.01