Finding the Fourth Proportional to 13,185.48, 18,196.20 and 7,520.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,185.48 : 18,196.20 = 7,520.88 : x
2. Step 2: Convert to fraction form
   13,185.48/18,196.20 = 7,520.88/x
3. Step 3: Cross multiply
   13,185.48x = 18,196.20 × 7,520.88
4. Step 4: Simplify right side
   13,185.48x = 136,851,436.66
5. Step 5: Solve for x
   x = 136,851,436.66/13,185.48
6. Step 6: Final answer
   x = 10,378.95