Finding the Fourth Proportional to 7,113.61, 10,670.82 and 1,919.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,113.61 : 10,670.82 = 1,919.89 : x
2. Step 2: Convert to fraction form
   7,113.61/10,670.82 = 1,919.89/x
3. Step 3: Cross multiply
   7,113.61x = 10,670.82 × 1,919.89
4. Step 4: Simplify right side
   7,113.61x = 20,486,800.61
5. Step 5: Solve for x
   x = 20,486,800.61/7,113.61
6. Step 6: Final answer
   x = 2,879.94