Finding the Fourth Proportional to 5,155.67, 7,114.69 and 2,917.78

Step by Step Solution

1. Step 1: Write the proportion equation
   5,155.67 : 7,114.69 = 2,917.78 : x
2. Step 2: Convert to fraction form
   5,155.67/7,114.69 = 2,917.78/x
3. Step 3: Cross multiply
   5,155.67x = 7,114.69 × 2,917.78
4. Step 4: Simplify right side
   5,155.67x = 20,759,100.19
5. Step 5: Solve for x
   x = 20,759,100.19/5,155.67
6. Step 6: Final answer
   x = 4,026.46