Finding the Fourth Proportional to 5,259.22, 7,249.34 and 5,155.54

Step by Step Solution

1. Step 1: Write the proportion equation
   5,259.22 : 7,249.34 = 5,155.54 : x
2. Step 2: Convert to fraction form
   5,259.22/7,249.34 = 5,155.54/x
3. Step 3: Cross multiply
   5,259.22x = 7,249.34 × 5,155.54
4. Step 4: Simplify right side
   5,259.22x = 37,374,262.34
5. Step 5: Solve for x
   x = 37,374,262.34/5,259.22
6. Step 6: Final answer
   x = 7,106.43