Finding the Fourth Proportional to 9,081.75, 13,543.15 and 8,998.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,081.75 : 13,543.15 = 8,998.71 : x
2. Step 2: Convert to fraction form
   9,081.75/13,543.15 = 8,998.71/x
3. Step 3: Cross multiply
   9,081.75x = 13,543.15 × 8,998.71
4. Step 4: Simplify right side
   9,081.75x = 121,870,879.34
5. Step 5: Solve for x
   x = 121,870,879.34/9,081.75
6. Step 6: Final answer
   x = 13,419.32