Finding the Fourth Proportional to 5,556.43, 7,664.54 and 3,668.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,556.43 : 7,664.54 = 3,668.05 : x
2. Step 2: Convert to fraction form
   5,556.43/7,664.54 = 3,668.05/x
3. Step 3: Cross multiply
   5,556.43x = 7,664.54 × 3,668.05
4. Step 4: Simplify right side
   5,556.43x = 28,113,915.95
5. Step 5: Solve for x
   x = 28,113,915.95/5,556.43
6. Step 6: Final answer
   x = 5,059.71