Finding the Fourth Proportional to 13,480.96, 18,604.56 and 7,513.60

Step by Step Solution

1. Step 1: Write the proportion equation
   13,480.96 : 18,604.56 = 7,513.60 : x
2. Step 2: Convert to fraction form
   13,480.96/18,604.56 = 7,513.60/x
3. Step 3: Cross multiply
   13,480.96x = 18,604.56 × 7,513.60
4. Step 4: Simplify right side
   13,480.96x = 139,787,222.02
5. Step 5: Solve for x
   x = 139,787,222.02/13,480.96
6. Step 6: Final answer
   x = 10,369.23