Finding the Fourth Proportional to 13,483.18, 18,606.20 and 7,515.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,483.18 : 18,606.20 = 7,515.50 : x
2. Step 2: Convert to fraction form
   13,483.18/18,606.20 = 7,515.50/x
3. Step 3: Cross multiply
   13,483.18x = 18,606.20 × 7,515.50
4. Step 4: Simplify right side
   13,483.18x = 139,834,896.10
5. Step 5: Solve for x
   x = 139,834,896.10/13,483.18
6. Step 6: Final answer
   x = 10,371.06