Finding the Fourth Proportional to 8,076.51, 12,112.43 and 3,145.05

Step by Step Solution

1. Step 1: Write the proportion equation
   8,076.51 : 12,112.43 = 3,145.05 : x
2. Step 2: Convert to fraction form
   8,076.51/12,112.43 = 3,145.05/x
3. Step 3: Cross multiply
   8,076.51x = 12,112.43 × 3,145.05
4. Step 4: Simplify right side
   8,076.51x = 38,094,182.25
5. Step 5: Solve for x
   x = 38,094,182.25/8,076.51
6. Step 6: Final answer
   x = 4,716.66