Finding the Fourth Proportional to 13,308.48, 18,350.72 and 8,522.16

Step by Step Solution

1. Step 1: Write the proportion equation
   13,308.48 : 18,350.72 = 8,522.16 : x
2. Step 2: Convert to fraction form
   13,308.48/18,350.72 = 8,522.16/x
3. Step 3: Cross multiply
   13,308.48x = 18,350.72 × 8,522.16
4. Step 4: Simplify right side
   13,308.48x = 156,387,771.96
5. Step 5: Solve for x
   x = 156,387,771.96/13,308.48
6. Step 6: Final answer
   x = 11,750.99