Finding the Fourth Proportional to 3,684.76, 5,085.13 and 2,113.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,684.76 : 5,085.13 = 2,113.16 : x
2. Step 2: Convert to fraction form
   3,684.76/5,085.13 = 2,113.16/x
3. Step 3: Cross multiply
   3,684.76x = 5,085.13 × 2,113.16
4. Step 4: Simplify right side
   3,684.76x = 10,745,693.31
5. Step 5: Solve for x
   x = 10,745,693.31/3,684.76
6. Step 6: Final answer
   x = 2,916.25