Finding the Fourth Proportional to 12,916.89, 17,825.31 and 7,327.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,916.89 : 17,825.31 = 7,327.89 : x
2. Step 2: Convert to fraction form
   12,916.89/17,825.31 = 7,327.89/x
3. Step 3: Cross multiply
   12,916.89x = 17,825.31 × 7,327.89
4. Step 4: Simplify right side
   12,916.89x = 130,621,910.90
5. Step 5: Solve for x
   x = 130,621,910.90/12,916.89
6. Step 6: Final answer
   x = 10,112.49