Finding the Fourth Proportional to 3,715.58, 5,128.83 and 2,535.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,715.58 : 5,128.83 = 2,535.81 : x
2. Step 2: Convert to fraction form
   3,715.58/5,128.83 = 2,535.81/x
3. Step 3: Cross multiply
   3,715.58x = 5,128.83 × 2,535.81
4. Step 4: Simplify right side
   3,715.58x = 13,005,738.40
5. Step 5: Solve for x
   x = 13,005,738.40/3,715.58
6. Step 6: Final answer
   x = 3,500.33