Finding the Fourth Proportional to 5,155.56, 7,114.35 and 2,917.89

Step by Step Solution

1. Step 1: Write the proportion equation
   5,155.56 : 7,114.35 = 2,917.89 : x
2. Step 2: Convert to fraction form
   5,155.56/7,114.35 = 2,917.89/x
3. Step 3: Cross multiply
   5,155.56x = 7,114.35 × 2,917.89
4. Step 4: Simplify right side
   5,155.56x = 20,758,890.72
5. Step 5: Solve for x
   x = 20,758,890.72/5,155.56
6. Step 6: Final answer
   x = 4,026.51