Finding the Fourth Proportional to 6,128.15, 8,464.59 and 5,329.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,128.15 : 8,464.59 = 5,329.89 : x
2. Step 2: Convert to fraction form
   6,128.15/8,464.59 = 5,329.89/x
3. Step 3: Cross multiply
   6,128.15x = 8,464.59 × 5,329.89
4. Step 4: Simplify right side
   6,128.15x = 45,115,333.60
5. Step 5: Solve for x
   x = 45,115,333.60/6,128.15
6. Step 6: Final answer
   x = 7,361.99