Finding the Fourth Proportional to 13,214.50, 18,236.82 and 7,625.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,214.50 : 18,236.82 = 7,625.50 : x
2. Step 2: Convert to fraction form
   13,214.50/18,236.82 = 7,625.50/x
3. Step 3: Cross multiply
   13,214.50x = 18,236.82 × 7,625.50
4. Step 4: Simplify right side
   13,214.50x = 139,064,870.91
5. Step 5: Solve for x
   x = 139,064,870.91/13,214.50
6. Step 6: Final answer
   x = 10,523.66