Finding the Fourth Proportional to 12,845.88, 17,729.57 and 7,469.98

Step by Step Solution

1. Step 1: Write the proportion equation
   12,845.88 : 17,729.57 = 7,469.98 : x
2. Step 2: Convert to fraction form
   12,845.88/17,729.57 = 7,469.98/x
3. Step 3: Cross multiply
   12,845.88x = 17,729.57 × 7,469.98
4. Step 4: Simplify right side
   12,845.88x = 132,439,574.15
5. Step 5: Solve for x
   x = 132,439,574.15/12,845.88
6. Step 6: Final answer
   x = 10,309.89