Finding the Fourth Proportional to 13,037.49, 17,985.78 and 7,729.29

Step by Step Solution

1. Step 1: Write the proportion equation
   13,037.49 : 17,985.78 = 7,729.29 : x
2. Step 2: Convert to fraction form
   13,037.49/17,985.78 = 7,729.29/x
3. Step 3: Cross multiply
   13,037.49x = 17,985.78 × 7,729.29
4. Step 4: Simplify right side
   13,037.49x = 139,017,309.50
5. Step 5: Solve for x
   x = 139,017,309.50/13,037.49
6. Step 6: Final answer
   x = 10,662.89