Finding the Fourth Proportional to 6,978.87, 10,418.06 and 5,980.92

Step by Step Solution

1. Step 1: Write the proportion equation
   6,978.87 : 10,418.06 = 5,980.92 : x
2. Step 2: Convert to fraction form
   6,978.87/10,418.06 = 5,980.92/x
3. Step 3: Cross multiply
   6,978.87x = 10,418.06 × 5,980.92
4. Step 4: Simplify right side
   6,978.87x = 62,309,601.08
5. Step 5: Solve for x
   x = 62,309,601.08/6,978.87
6. Step 6: Final answer
   x = 8,928.33