Finding the Fourth Proportional to 13,185.88, 18,198.18 and 7,522.62

Step by Step Solution

1. Step 1: Write the proportion equation
   13,185.88 : 18,198.18 = 7,522.62 : x
2. Step 2: Convert to fraction form
   13,185.88/18,198.18 = 7,522.62/x
3. Step 3: Cross multiply
   13,185.88x = 18,198.18 × 7,522.62
4. Step 4: Simplify right side
   13,185.88x = 136,897,992.83
5. Step 5: Solve for x
   x = 136,897,992.83/13,185.88
6. Step 6: Final answer
   x = 10,382.17