Finding the Fourth Proportional to 12,589.90, 17,375.03 and 7,554.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,589.90 : 17,375.03 = 7,554.31 : x
2. Step 2: Convert to fraction form
   12,589.90/17,375.03 = 7,554.31/x
3. Step 3: Cross multiply
   12,589.90x = 17,375.03 × 7,554.31
4. Step 4: Simplify right side
   12,589.90x = 131,256,362.88
5. Step 5: Solve for x
   x = 131,256,362.88/12,589.90
6. Step 6: Final answer
   x = 10,425.53