Finding the Fourth Proportional to 12,119.72, 18,179.06 and 3,799.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,119.72 : 18,179.06 = 3,799.55 : x
2. Step 2: Convert to fraction form
   12,119.72/18,179.06 = 3,799.55/x
3. Step 3: Cross multiply
   12,119.72x = 18,179.06 × 3,799.55
4. Step 4: Simplify right side
   12,119.72x = 69,072,273.87
5. Step 5: Solve for x
   x = 69,072,273.87/12,119.72
6. Step 6: Final answer
   x = 5,699.16