Finding the Fourth Proportional to 12,698.64, 17,527.56 and 7,662.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,698.64 : 17,527.56 = 7,662.96 : x
2. Step 2: Convert to fraction form
   12,698.64/17,527.56 = 7,662.96/x
3. Step 3: Cross multiply
   12,698.64x = 17,527.56 × 7,662.96
4. Step 4: Simplify right side
   12,698.64x = 134,312,991.18
5. Step 5: Solve for x
   x = 134,312,991.18/12,698.64
6. Step 6: Final answer
   x = 10,576.96