Finding the Fourth Proportional to 9,172.05, 12,662.83 and 5,588.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,172.05 : 12,662.83 = 5,588.36 : x
2. Step 2: Convert to fraction form
   9,172.05/12,662.83 = 5,588.36/x
3. Step 3: Cross multiply
   9,172.05x = 12,662.83 × 5,588.36
4. Step 4: Simplify right side
   9,172.05x = 70,764,452.66
5. Step 5: Solve for x
   x = 70,764,452.66/9,172.05
6. Step 6: Final answer
   x = 7,715.23