Finding the Fourth Proportional to 13,485.77, 18,610.33 and 7,517.38

Step by Step Solution

1. Step 1: Write the proportion equation
   13,485.77 : 18,610.33 = 7,517.38 : x
2. Step 2: Convert to fraction form
   13,485.77/18,610.33 = 7,517.38/x
3. Step 3: Cross multiply
   13,485.77x = 18,610.33 × 7,517.38
4. Step 4: Simplify right side
   13,485.77x = 139,900,922.54
5. Step 5: Solve for x
   x = 139,900,922.54/13,485.77
6. Step 6: Final answer
   x = 10,373.97