Finding the Fourth Proportional to 12,760.31, 17,606.52 and 7,723.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,760.31 : 17,606.52 = 7,723.55 : x
2. Step 2: Convert to fraction form
   12,760.31/17,606.52 = 7,723.55/x
3. Step 3: Cross multiply
   12,760.31x = 17,606.52 × 7,723.55
4. Step 4: Simplify right side
   12,760.31x = 135,984,837.55
5. Step 5: Solve for x
   x = 135,984,837.55/12,760.31
6. Step 6: Final answer
   x = 10,656.86