Finding the Fourth Proportional to 12,735.50, 17,576.61 and 7,146.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,735.50 : 17,576.61 = 7,146.50 : x
2. Step 2: Convert to fraction form
   12,735.50/17,576.61 = 7,146.50/x
3. Step 3: Cross multiply
   12,735.50x = 17,576.61 × 7,146.50
4. Step 4: Simplify right side
   12,735.50x = 125,611,243.37
5. Step 5: Solve for x
   x = 125,611,243.37/12,735.50
6. Step 6: Final answer
   x = 9,863.08