Finding the Fourth Proportional to 12,758.45, 17,607.02 and 7,723.58

Step by Step Solution

1. Step 1: Write the proportion equation
   12,758.45 : 17,607.02 = 7,723.58 : x
2. Step 2: Convert to fraction form
   12,758.45/17,607.02 = 7,723.58/x
3. Step 3: Cross multiply
   12,758.45x = 17,607.02 × 7,723.58
4. Step 4: Simplify right side
   12,758.45x = 135,989,100.88
5. Step 5: Solve for x
   x = 135,989,100.88/12,758.45
6. Step 6: Final answer
   x = 10,658.75