Finding the Fourth Proportional to 5,155.56, 7,118.82 and 4,919.22

Step by Step Solution

1. Step 1: Write the proportion equation
   5,155.56 : 7,118.82 = 4,919.22 : x
2. Step 2: Convert to fraction form
   5,155.56/7,118.82 = 4,919.22/x
3. Step 3: Cross multiply
   5,155.56x = 7,118.82 × 4,919.22
4. Step 4: Simplify right side
   5,155.56x = 35,019,041.72
5. Step 5: Solve for x
   x = 35,019,041.72/5,155.56
6. Step 6: Final answer
   x = 6,792.48