Finding the Fourth Proportional to 7,870.91, 10,863.03 and 5,979.38

Step by Step Solution

1. Step 1: Write the proportion equation
   7,870.91 : 10,863.03 = 5,979.38 : x
2. Step 2: Convert to fraction form
   7,870.91/10,863.03 = 5,979.38/x
3. Step 3: Cross multiply
   7,870.91x = 10,863.03 × 5,979.38
4. Step 4: Simplify right side
   7,870.91x = 64,954,130.01
5. Step 5: Solve for x
   x = 64,954,130.01/7,870.91
6. Step 6: Final answer
   x = 8,252.43