Finding the Fourth Proportional to 3,676.79, 5,077.59 and 2,666.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,676.79 : 5,077.59 = 2,666.72 : x
2. Step 2: Convert to fraction form
   3,676.79/5,077.59 = 2,666.72/x
3. Step 3: Cross multiply
   3,676.79x = 5,077.59 × 2,666.72
4. Step 4: Simplify right side
   3,676.79x = 13,540,513.50
5. Step 5: Solve for x
   x = 13,540,513.50/3,676.79
6. Step 6: Final answer
   x = 3,682.70