Finding the Fourth Proportional to 6,570.81, 9,860.54 and 3,106.17

Step by Step Solution

1. Step 1: Write the proportion equation
   6,570.81 : 9,860.54 = 3,106.17 : x
2. Step 2: Convert to fraction form
   6,570.81/9,860.54 = 3,106.17/x
3. Step 3: Cross multiply
   6,570.81x = 9,860.54 × 3,106.17
4. Step 4: Simplify right side
   6,570.81x = 30,628,498.00
5. Step 5: Solve for x
   x = 30,628,498.00/6,570.81
6. Step 6: Final answer
   x = 4,661.30