Finding the Fourth Proportional to 13,485.22, 18,609.69 and 7,517.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,485.22 : 18,609.69 = 7,517.27 : x
2. Step 2: Convert to fraction form
   13,485.22/18,609.69 = 7,517.27/x
3. Step 3: Cross multiply
   13,485.22x = 18,609.69 × 7,517.27
4. Step 4: Simplify right side
   13,485.22x = 139,894,064.35
5. Step 5: Solve for x
   x = 139,894,064.35/13,485.22
6. Step 6: Final answer
   x = 10,373.88