Finding the Fourth Proportional to 13,627.29, 18,788.31 and 9,143.94

Step by Step Solution

1. Step 1: Write the proportion equation
   13,627.29 : 18,788.31 = 9,143.94 : x
2. Step 2: Convert to fraction form
   13,627.29/18,788.31 = 9,143.94/x
3. Step 3: Cross multiply
   13,627.29x = 18,788.31 × 9,143.94
4. Step 4: Simplify right side
   13,627.29x = 171,799,179.34
5. Step 5: Solve for x
   x = 171,799,179.34/13,627.29
6. Step 6: Final answer
   x = 12,607.00