Finding the Fourth Proportional to 3,677.96, 5,511.45 and 3,147.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,677.96 : 5,511.45 = 3,147.72 : x
2. Step 2: Convert to fraction form
   3,677.96/5,511.45 = 3,147.72/x
3. Step 3: Cross multiply
   3,677.96x = 5,511.45 × 3,147.72
4. Step 4: Simplify right side
   3,677.96x = 17,348,501.39
5. Step 5: Solve for x
   x = 17,348,501.39/3,677.96
6. Step 6: Final answer
   x = 4,716.89