Finding the Fourth Proportional to 7,870.41, 10,857.91 and 4,683.07

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.41 : 10,857.91 = 4,683.07 : x
2. Step 2: Convert to fraction form
   7,870.41/10,857.91 = 4,683.07/x
3. Step 3: Cross multiply
   7,870.41x = 10,857.91 × 4,683.07
4. Step 4: Simplify right side
   7,870.41x = 50,848,313.73
5. Step 5: Solve for x
   x = 50,848,313.73/7,870.41
6. Step 6: Final answer
   x = 6,460.69