Finding the Fourth Proportional to 3,899.75, 5,824.72 and 3,528.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899.75 : 5,824.72 = 3,528.98 : x
2. Step 2: Convert to fraction form
   3,899.75/5,824.72 = 3,528.98/x
3. Step 3: Cross multiply
   3,899.75x = 5,824.72 × 3,528.98
4. Step 4: Simplify right side
   3,899.75x = 20,555,320.39
5. Step 5: Solve for x
   x = 20,555,320.39/3,899.75
6. Step 6: Final answer
   x = 5,270.93