Finding the Fourth Proportional to 9,074.16, 13,613.94 and 7,690.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,074.16 : 13,613.94 = 7,690.86 : x
2. Step 2: Convert to fraction form
   9,074.16/13,613.94 = 7,690.86/x
3. Step 3: Cross multiply
   9,074.16x = 13,613.94 × 7,690.86
4. Step 4: Simplify right side
   9,074.16x = 104,702,906.59
5. Step 5: Solve for x
   x = 104,702,906.59/9,074.16
6. Step 6: Final answer
   x = 11,538.58