Finding the Fourth Proportional to 10,680.76, 14,745.18 and 7,150

Step by Step Solution

1. Step 1: Write the proportion equation
   10,680.76 : 14,745.18 = 7,150 : x
2. Step 2: Convert to fraction form
   10,680.76/14,745.18 = 7,150/x
3. Step 3: Cross multiply
   10,680.76x = 14,745.18 × 7,150
4. Step 4: Simplify right side
   10,680.76x = 105,428,037
5. Step 5: Solve for x
   x = 105,428,037/10,680.76
6. Step 6: Final answer
   x = 9,870.84