Finding the Fourth Proportional to 6,578.77, 9,870.89 and 3,458.02

Step by Step Solution

1. Step 1: Write the proportion equation
   6,578.77 : 9,870.89 = 3,458.02 : x
2. Step 2: Convert to fraction form
   6,578.77/9,870.89 = 3,458.02/x
3. Step 3: Cross multiply
   6,578.77x = 9,870.89 × 3,458.02
4. Step 4: Simplify right side
   6,578.77x = 34,133,756.01
5. Step 5: Solve for x
   x = 34,133,756.01/6,578.77
6. Step 6: Final answer
   x = 5,188.47