Finding the Fourth Proportional to 8,911.62, 12,301.82 and 5,556.10

Step by Step Solution

1. Step 1: Write the proportion equation
   8,911.62 : 12,301.82 = 5,556.10 : x
2. Step 2: Convert to fraction form
   8,911.62/12,301.82 = 5,556.10/x
3. Step 3: Cross multiply
   8,911.62x = 12,301.82 × 5,556.10
4. Step 4: Simplify right side
   8,911.62x = 68,350,142.10
5. Step 5: Solve for x
   x = 68,350,142.10/8,911.62
6. Step 6: Final answer
   x = 7,669.78