Finding the Fourth Proportional to 7,112.82, 10,667.61 and 1,919.10

Step by Step Solution

1. Step 1: Write the proportion equation
   7,112.82 : 10,667.61 = 1,919.10 : x
2. Step 2: Convert to fraction form
   7,112.82/10,667.61 = 1,919.10/x
3. Step 3: Cross multiply
   7,112.82x = 10,667.61 × 1,919.10
4. Step 4: Simplify right side
   7,112.82x = 20,472,210.35
5. Step 5: Solve for x
   x = 20,472,210.35/7,112.82
6. Step 6: Final answer
   x = 2,878.21