Finding the Fourth Proportional to 12,612.56, 18,919.37 and 3,727.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,612.56 : 18,919.37 = 3,727.91 : x
2. Step 2: Convert to fraction form
   12,612.56/18,919.37 = 3,727.91/x
3. Step 3: Cross multiply
   12,612.56x = 18,919.37 × 3,727.91
4. Step 4: Simplify right side
   12,612.56x = 70,529,595.38
5. Step 5: Solve for x
   x = 70,529,595.38/12,612.56
6. Step 6: Final answer
   x = 5,592.01