Finding the Fourth Proportional to 8,128.54, 12,186.53 and 3,740.77

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.54 : 12,186.53 = 3,740.77 : x
2. Step 2: Convert to fraction form
   8,128.54/12,186.53 = 3,740.77/x
3. Step 3: Cross multiply
   8,128.54x = 12,186.53 × 3,740.77
4. Step 4: Simplify right side
   8,128.54x = 45,587,005.83
5. Step 5: Solve for x
   x = 45,587,005.83/8,128.54
6. Step 6: Final answer
   x = 5,608.26