Finding the Fourth Proportional to 13,218.53, 18,241.82 and 7,250.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,218.53 : 18,241.82 = 7,250.50 : x
2. Step 2: Convert to fraction form
   13,218.53/18,241.82 = 7,250.50/x
3. Step 3: Cross multiply
   13,218.53x = 18,241.82 × 7,250.50
4. Step 4: Simplify right side
   13,218.53x = 132,262,315.91
5. Step 5: Solve for x
   x = 132,262,315.91/13,218.53
6. Step 6: Final answer
   x = 10,005.83