Finding the Fourth Proportional to 12,581.72, 18,875.49 and 3,697.19

Step by Step Solution

1. Step 1: Write the proportion equation
   12,581.72 : 18,875.49 = 3,697.19 : x
2. Step 2: Convert to fraction form
   12,581.72/18,875.49 = 3,697.19/x
3. Step 3: Cross multiply
   12,581.72x = 18,875.49 × 3,697.19
4. Step 4: Simplify right side
   12,581.72x = 69,786,187.74
5. Step 5: Solve for x
   x = 69,786,187.74/12,581.72
6. Step 6: Final answer
   x = 5,546.63