Finding the Fourth Proportional to 3,685.06, 5,085.33 and 2,113.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,685.06 : 5,085.33 = 2,113.06 : x
2. Step 2: Convert to fraction form
   3,685.06/5,085.33 = 2,113.06/x
3. Step 3: Cross multiply
   3,685.06x = 5,085.33 × 2,113.06
4. Step 4: Simplify right side
   3,685.06x = 10,745,607.41
5. Step 5: Solve for x
   x = 10,745,607.41/3,685.06
6. Step 6: Final answer
   x = 2,915.99