Finding the Fourth Proportional to 6,210.78, 8,570.78 and 4,118.82

Step by Step Solution

1. Step 1: Write the proportion equation
   6,210.78 : 8,570.78 = 4,118.82 : x
2. Step 2: Convert to fraction form
   6,210.78/8,570.78 = 4,118.82/x
3. Step 3: Cross multiply
   6,210.78x = 8,570.78 × 4,118.82
4. Step 4: Simplify right side
   6,210.78x = 35,301,500.08
5. Step 5: Solve for x
   x = 35,301,500.08/6,210.78
6. Step 6: Final answer
   x = 5,683.91