Finding the Fourth Proportional to 12,076.89, 18,111.83 and 4,679.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,076.89 : 18,111.83 = 4,679.70 : x
2. Step 2: Convert to fraction form
   12,076.89/18,111.83 = 4,679.70/x
3. Step 3: Cross multiply
   12,076.89x = 18,111.83 × 4,679.70
4. Step 4: Simplify right side
   12,076.89x = 84,757,907.45
5. Step 5: Solve for x
   x = 84,757,907.45/12,076.89
6. Step 6: Final answer
   x = 7,018.19