Finding the Fourth Proportional to 13,481.73, 18,604.88 and 7,513.78

Step by Step Solution

1. Step 1: Write the proportion equation
   13,481.73 : 18,604.88 = 7,513.78 : x
2. Step 2: Convert to fraction form
   13,481.73/18,604.88 = 7,513.78/x
3. Step 3: Cross multiply
   13,481.73x = 18,604.88 × 7,513.78
4. Step 4: Simplify right side
   13,481.73x = 139,793,077.43
5. Step 5: Solve for x
   x = 139,793,077.43/13,481.73
6. Step 6: Final answer
   x = 10,369.07