Finding the Fourth Proportional to 8,538.06, 12,810.96 and 3,855.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,538.06 : 12,810.96 = 3,855.54 : x
2. Step 2: Convert to fraction form
   8,538.06/12,810.96 = 3,855.54/x
3. Step 3: Cross multiply
   8,538.06x = 12,810.96 × 3,855.54
4. Step 4: Simplify right side
   8,538.06x = 49,393,168.72
5. Step 5: Solve for x
   x = 49,393,168.72/8,538.06
6. Step 6: Final answer
   x = 5,785.06