Finding the Fourth Proportional to 9,618.18, 14,343.29 and 8,556.27

Step by Step Solution

1. Step 1: Write the proportion equation
   9,618.18 : 14,343.29 = 8,556.27 : x
2. Step 2: Convert to fraction form
   9,618.18/14,343.29 = 8,556.27/x
3. Step 3: Cross multiply
   9,618.18x = 14,343.29 × 8,556.27
4. Step 4: Simplify right side
   9,618.18x = 122,725,019.15
5. Step 5: Solve for x
   x = 122,725,019.15/9,618.18
6. Step 6: Final answer
   x = 12,759.69