Finding the Fourth Proportional to 3,667.10, 5,499.81 and 2,186.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,667.10 : 5,499.81 = 2,186.74 : x
2. Step 2: Convert to fraction form
   3,667.10/5,499.81 = 2,186.74/x
3. Step 3: Cross multiply
   3,667.10x = 5,499.81 × 2,186.74
4. Step 4: Simplify right side
   3,667.10x = 12,026,616.09
5. Step 5: Solve for x
   x = 12,026,616.09/3,667.10
6. Step 6: Final answer
   x = 3,279.60