Finding the Fourth Proportional to 3,705.38, 5,113.86 and 2,112.26

Step by Step Solution

1. Step 1: Write the proportion equation
   3,705.38 : 5,113.86 = 2,112.26 : x
2. Step 2: Convert to fraction form
   3,705.38/5,113.86 = 2,112.26/x
3. Step 3: Cross multiply
   3,705.38x = 5,113.86 × 2,112.26
4. Step 4: Simplify right side
   3,705.38x = 10,801,801.92
5. Step 5: Solve for x
   x = 10,801,801.92/3,705.38
6. Step 6: Final answer
   x = 2,915.17