Finding the Fourth Proportional to 8,555.76, 12,837.29 and 4,111.29

Step by Step Solution

1. Step 1: Write the proportion equation
   8,555.76 : 12,837.29 = 4,111.29 : x
2. Step 2: Convert to fraction form
   8,555.76/12,837.29 = 4,111.29/x
3. Step 3: Cross multiply
   8,555.76x = 12,837.29 × 4,111.29
4. Step 4: Simplify right side
   8,555.76x = 52,777,801.45
5. Step 5: Solve for x
   x = 52,777,801.45/8,555.76
6. Step 6: Final answer
   x = 6,168.69