Finding the Fourth Proportional to 6,870.15, 9,473.69 and 5,878.71

Step by Step Solution

1. Step 1: Write the proportion equation
   6,870.15 : 9,473.69 = 5,878.71 : x
2. Step 2: Convert to fraction form
   6,870.15/9,473.69 = 5,878.71/x
3. Step 3: Cross multiply
   6,870.15x = 9,473.69 × 5,878.71
4. Step 4: Simplify right side
   6,870.15x = 55,693,046.75
5. Step 5: Solve for x
   x = 55,693,046.75/6,870.15
6. Step 6: Final answer
   x = 8,106.53