Finding the Fourth Proportional to 6,789.89, 9,356.01 and 5,458.25

Step by Step Solution

1. Step 1: Write the proportion equation
   6,789.89 : 9,356.01 = 5,458.25 : x
2. Step 2: Convert to fraction form
   6,789.89/9,356.01 = 5,458.25/x
3. Step 3: Cross multiply
   6,789.89x = 9,356.01 × 5,458.25
4. Step 4: Simplify right side
   6,789.89x = 51,067,444.50
5. Step 5: Solve for x
   x = 51,067,444.50/6,789.89
6. Step 6: Final answer
   x = 7,521.10