Finding the Fourth Proportional to 9,046.42, 13,480.79 and 8,749.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,046.42 : 13,480.79 = 8,749.12 : x
2. Step 2: Convert to fraction form
   9,046.42/13,480.79 = 8,749.12/x
3. Step 3: Cross multiply
   9,046.42x = 13,480.79 × 8,749.12
4. Step 4: Simplify right side
   9,046.42x = 117,945,049.40
5. Step 5: Solve for x
   x = 117,945,049.40/9,046.42
6. Step 6: Final answer
   x = 13,037.76