Finding the Fourth Proportional to 9,717.82, 13,422.69 and 8,773.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,717.82 : 13,422.69 = 8,773.16 : x
2. Step 2: Convert to fraction form
   9,717.82/13,422.69 = 8,773.16/x
3. Step 3: Cross multiply
   9,717.82x = 13,422.69 × 8,773.16
4. Step 4: Simplify right side
   9,717.82x = 117,759,339.89
5. Step 5: Solve for x
   x = 117,759,339.89/9,717.82
6. Step 6: Final answer
   x = 12,117.88