Finding the Fourth Proportional to 13,483.54, 18,607.92 and 7,515.25

Step by Step Solution

1. Step 1: Write the proportion equation
   13,483.54 : 18,607.92 = 7,515.25 : x
2. Step 2: Convert to fraction form
   13,483.54/18,607.92 = 7,515.25/x
3. Step 3: Cross multiply
   13,483.54x = 18,607.92 × 7,515.25
4. Step 4: Simplify right side
   13,483.54x = 139,843,170.78
5. Step 5: Solve for x
   x = 139,843,170.78/13,483.54
6. Step 6: Final answer
   x = 10,371.40