Finding the Fourth Proportional to 5,556.12, 7,664.65 and 3,665.71

Step by Step Solution

1. Step 1: Write the proportion equation
   5,556.12 : 7,664.65 = 3,665.71 : x
2. Step 2: Convert to fraction form
   5,556.12/7,664.65 = 3,665.71/x
3. Step 3: Cross multiply
   5,556.12x = 7,664.65 × 3,665.71
4. Step 4: Simplify right side
   5,556.12x = 28,096,384.15
5. Step 5: Solve for x
   x = 28,096,384.15/5,556.12
6. Step 6: Final answer
   x = 5,056.84