Finding the Fourth Proportional to 13,279.53, 18,323.60 and 7,613.24

Step by Step Solution

1. Step 1: Write the proportion equation
   13,279.53 : 18,323.60 = 7,613.24 : x
2. Step 2: Convert to fraction form
   13,279.53/18,323.60 = 7,613.24/x
3. Step 3: Cross multiply
   13,279.53x = 18,323.60 × 7,613.24
4. Step 4: Simplify right side
   13,279.53x = 139,501,834.78
5. Step 5: Solve for x
   x = 139,501,834.78/13,279.53
6. Step 6: Final answer
   x = 10,505.03