Finding the Fourth Proportional to 6,870.71, 10,306.80 and 2,189.06

Step by Step Solution

1. Step 1: Write the proportion equation
   6,870.71 : 10,306.80 = 2,189.06 : x
2. Step 2: Convert to fraction form
   6,870.71/10,306.80 = 2,189.06/x
3. Step 3: Cross multiply
   6,870.71x = 10,306.80 × 2,189.06
4. Step 4: Simplify right side
   6,870.71x = 22,562,152.07
5. Step 5: Solve for x
   x = 22,562,152.07/6,870.71
6. Step 6: Final answer
   x = 3,283.82