Finding the Fourth Proportional to 19,692.56, 29,469.45 and 12,300.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,692.56 : 29,469.45 = 12,300.50 : x
2. Step 2: Convert to fraction form
   19,692.56/29,469.45 = 12,300.50/x
3. Step 3: Cross multiply
   19,692.56x = 29,469.45 × 12,300.50
4. Step 4: Simplify right side
   19,692.56x = 362,488,969.73
5. Step 5: Solve for x
   x = 362,488,969.73/19,692.56
6. Step 6: Final answer
   x = 18,407.41