Finding the Fourth Proportional to 3,710.56, 5,528.52 and 3,657.12

Step by Step Solution

1. Step 1: Write the proportion equation
   3,710.56 : 5,528.52 = 3,657.12 : x
2. Step 2: Convert to fraction form
   3,710.56/5,528.52 = 3,657.12/x
3. Step 3: Cross multiply
   3,710.56x = 5,528.52 × 3,657.12
4. Step 4: Simplify right side
   3,710.56x = 20,218,461.06
5. Step 5: Solve for x
   x = 20,218,461.06/3,710.56
6. Step 6: Final answer
   x = 5,448.90