Finding the Fourth Proportional to 9,812.41, 13,576.79 and 8,556.09

Step by Step Solution

1. Step 1: Write the proportion equation
   9,812.41 : 13,576.79 = 8,556.09 : x
2. Step 2: Convert to fraction form
   9,812.41/13,576.79 = 8,556.09/x
3. Step 3: Cross multiply
   9,812.41x = 13,576.79 × 8,556.09
4. Step 4: Simplify right side
   9,812.41x = 116,164,237.15
5. Step 5: Solve for x
   x = 116,164,237.15/9,812.41
6. Step 6: Final answer
   x = 11,838.50