Finding the Fourth Proportional to 9,498.20, 14,149.78 and 9,071.73

Step by Step Solution

1. Step 1: Write the proportion equation
   9,498.20 : 14,149.78 = 9,071.73 : x
2. Step 2: Convert to fraction form
   9,498.20/14,149.78 = 9,071.73/x
3. Step 3: Cross multiply
   9,498.20x = 14,149.78 × 9,071.73
4. Step 4: Simplify right side
   9,498.20x = 128,362,961.04
5. Step 5: Solve for x
   x = 128,362,961.04/9,498.20
6. Step 6: Final answer
   x = 13,514.46