Finding the Fourth Proportional to 5,373.82, 8,074.29 and 5,155.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,373.82 : 8,074.29 = 5,155.12 : x
2. Step 2: Convert to fraction form
   5,373.82/8,074.29 = 5,155.12/x
3. Step 3: Cross multiply
   5,373.82x = 8,074.29 × 5,155.12
4. Step 4: Simplify right side
   5,373.82x = 41,623,933.86
5. Step 5: Solve for x
   x = 41,623,933.86/5,373.82
6. Step 6: Final answer
   x = 7,745.69