Finding the Fourth Proportional to 12,692.51, 17,517.30 and 7,659.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,692.51 : 17,517.30 = 7,659.45 : x
2. Step 2: Convert to fraction form
   12,692.51/17,517.30 = 7,659.45/x
3. Step 3: Cross multiply
   12,692.51x = 17,517.30 × 7,659.45
4. Step 4: Simplify right side
   12,692.51x = 134,172,883.49
5. Step 5: Solve for x
   x = 134,172,883.49/12,692.51
6. Step 6: Final answer
   x = 10,571.03