Finding the Fourth Proportional to 8,128.09, 12,187.59 and 3,060.22

Step by Step Solution

1. Step 1: Write the proportion equation
   8,128.09 : 12,187.59 = 3,060.22 : x
2. Step 2: Convert to fraction form
   8,128.09/12,187.59 = 3,060.22/x
3. Step 3: Cross multiply
   8,128.09x = 12,187.59 × 3,060.22
4. Step 4: Simplify right side
   8,128.09x = 37,296,706.67
5. Step 5: Solve for x
   x = 37,296,706.67/8,128.09
6. Step 6: Final answer
   x = 4,588.62