Finding the Fourth Proportional to 3,530.39, 4,871.79 and 2,113.25

Step by Step Solution

1. Step 1: Write the proportion equation
   3,530.39 : 4,871.79 = 2,113.25 : x
2. Step 2: Convert to fraction form
   3,530.39/4,871.79 = 2,113.25/x
3. Step 3: Cross multiply
   3,530.39x = 4,871.79 × 2,113.25
4. Step 4: Simplify right side
   3,530.39x = 10,295,285.86
5. Step 5: Solve for x
   x = 10,295,285.86/3,530.39
6. Step 6: Final answer
   x = 2,916.19