Finding the Fourth Proportional to 3,685.91, 5,507.33 and 3,556.74

Step by Step Solution

1. Step 1: Write the proportion equation
   3,685.91 : 5,507.33 = 3,556.74 : x
2. Step 2: Convert to fraction form
   3,685.91/5,507.33 = 3,556.74/x
3. Step 3: Cross multiply
   3,685.91x = 5,507.33 × 3,556.74
4. Step 4: Simplify right side
   3,685.91x = 19,588,123.12
5. Step 5: Solve for x
   x = 19,588,123.12/3,685.91
6. Step 6: Final answer
   x = 5,314.33