Finding the Fourth Proportional to 12,077.20, 18,109.56 and 3,754.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,077.20 : 18,109.56 = 3,754.96 : x
2. Step 2: Convert to fraction form
   12,077.20/18,109.56 = 3,754.96/x
3. Step 3: Cross multiply
   12,077.20x = 18,109.56 × 3,754.96
4. Step 4: Simplify right side
   12,077.20x = 68,000,673.42
5. Step 5: Solve for x
   x = 68,000,673.42/12,077.20
6. Step 6: Final answer
   x = 5,630.50