Finding the Fourth Proportional to 13,483.47, 18,607.82 and 7,515.18

Step by Step Solution

1. Step 1: Write the proportion equation
   13,483.47 : 18,607.82 = 7,515.18 : x
2. Step 2: Convert to fraction form
   13,483.47/18,607.82 = 7,515.18/x
3. Step 3: Cross multiply
   13,483.47x = 18,607.82 × 7,515.18
4. Step 4: Simplify right side
   13,483.47x = 139,841,149.59
5. Step 5: Solve for x
   x = 139,841,149.59/13,483.47
6. Step 6: Final answer
   x = 10,371.30