Finding the Fourth Proportional to 11,865.42, 17,773.56 and 8,584.92

Step by Step Solution

1. Step 1: Write the proportion equation
   11,865.42 : 17,773.56 = 8,584.92 : x
2. Step 2: Convert to fraction form
   11,865.42/17,773.56 = 8,584.92/x
3. Step 3: Cross multiply
   11,865.42x = 17,773.56 × 8,584.92
4. Step 4: Simplify right side
   11,865.42x = 152,584,590.72
5. Step 5: Solve for x
   x = 152,584,590.72/11,865.42
6. Step 6: Final answer
   x = 12,859.60