Finding the Fourth Proportional to 8,076.88, 12,120.88 and 3,146.56

Step by Step Solution

1. Step 1: Write the proportion equation
   8,076.88 : 12,120.88 = 3,146.56 : x
2. Step 2: Convert to fraction form
   8,076.88/12,120.88 = 3,146.56/x
3. Step 3: Cross multiply
   8,076.88x = 12,120.88 × 3,146.56
4. Step 4: Simplify right side
   8,076.88x = 38,139,076.17
5. Step 5: Solve for x
   x = 38,139,076.17/8,076.88
6. Step 6: Final answer
   x = 4,722.01