Finding the Fourth Proportional to 9,190.82, 12,685.94 and 5,416.18

Step by Step Solution

1. Step 1: Write the proportion equation
   9,190.82 : 12,685.94 = 5,416.18 : x
2. Step 2: Convert to fraction form
   9,190.82/12,685.94 = 5,416.18/x
3. Step 3: Cross multiply
   9,190.82x = 12,685.94 × 5,416.18
4. Step 4: Simplify right side
   9,190.82x = 68,709,316.33
5. Step 5: Solve for x
   x = 68,709,316.33/9,190.82
6. Step 6: Final answer
   x = 7,475.86