Finding the Fourth Proportional to 3,573.56, 5,354.42 and 2,528.39

Step by Step Solution

1. Step 1: Write the proportion equation
   3,573.56 : 5,354.42 = 2,528.39 : x
2. Step 2: Convert to fraction form
   3,573.56/5,354.42 = 2,528.39/x
3. Step 3: Cross multiply
   3,573.56x = 5,354.42 × 2,528.39
4. Step 4: Simplify right side
   3,573.56x = 13,538,041.53
5. Step 5: Solve for x
   x = 13,538,041.53/3,573.56
6. Step 6: Final answer
   x = 3,788.39