Finding the Fourth Proportional to 9,286.86, 12,817.10 and 5,513.34

Step by Step Solution

1. Step 1: Write the proportion equation
   9,286.86 : 12,817.10 = 5,513.34 : x
2. Step 2: Convert to fraction form
   9,286.86/12,817.10 = 5,513.34/x
3. Step 3: Cross multiply
   9,286.86x = 12,817.10 × 5,513.34
4. Step 4: Simplify right side
   9,286.86x = 70,665,030.11
5. Step 5: Solve for x
   x = 70,665,030.11/9,286.86
6. Step 6: Final answer
   x = 7,609.14