Finding the Fourth Proportional to 10,978.56, 15,144.71 and 6,730.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,978.56 : 15,144.71 = 6,730.62 : x
2. Step 2: Convert to fraction form
   10,978.56/15,144.71 = 6,730.62/x
3. Step 3: Cross multiply
   10,978.56x = 15,144.71 × 6,730.62
4. Step 4: Simplify right side
   10,978.56x = 101,933,254.37
5. Step 5: Solve for x
   x = 101,933,254.37/10,978.56
6. Step 6: Final answer
   x = 9,284.76