Finding the Fourth Proportional to 8,059.93, 12,086.81 and 3,128.93

Step by Step Solution

1. Step 1: Write the proportion equation
   8,059.93 : 12,086.81 = 3,128.93 : x
2. Step 2: Convert to fraction form
   8,059.93/12,086.81 = 3,128.93/x
3. Step 3: Cross multiply
   8,059.93x = 12,086.81 × 3,128.93
4. Step 4: Simplify right side
   8,059.93x = 37,818,782.41
5. Step 5: Solve for x
   x = 37,818,782.41/8,059.93
6. Step 6: Final answer
   x = 4,692.20