Finding the Fourth Proportional to 12,079.76, 18,119.64 and 3,314.72

Step by Step Solution

1. Step 1: Write the proportion equation
   12,079.76 : 18,119.64 = 3,314.72 : x
2. Step 2: Convert to fraction form
   12,079.76/18,119.64 = 3,314.72/x
3. Step 3: Cross multiply
   12,079.76x = 18,119.64 × 3,314.72
4. Step 4: Simplify right side
   12,079.76x = 60,061,533.10
5. Step 5: Solve for x
   x = 60,061,533.10/12,079.76
6. Step 6: Final answer
   x = 4,972.08