Finding the Fourth Proportional to 12,820.90, 17,692.41 and 7,519.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,820.90 : 17,692.41 = 7,519.23 : x
2. Step 2: Convert to fraction form
   12,820.90/17,692.41 = 7,519.23/x
3. Step 3: Cross multiply
   12,820.90x = 17,692.41 × 7,519.23
4. Step 4: Simplify right side
   12,820.90x = 133,033,300.04
5. Step 5: Solve for x
   x = 133,033,300.04/12,820.90
6. Step 6: Final answer
   x = 10,376.28