Finding the Fourth Proportional to 9,291.16, 12,820.94 and 5,513.67

Step by Step Solution

1. Step 1: Write the proportion equation
   9,291.16 : 12,820.94 = 5,513.67 : x
2. Step 2: Convert to fraction form
   9,291.16/12,820.94 = 5,513.67/x
3. Step 3: Cross multiply
   9,291.16x = 12,820.94 × 5,513.67
4. Step 4: Simplify right side
   9,291.16x = 70,690,404.68
5. Step 5: Solve for x
   x = 70,690,404.68/9,291.16
6. Step 6: Final answer
   x = 7,608.35