Finding the Fourth Proportional to 12,675.45, 17,493.59 and 7,642.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,675.45 : 17,493.59 = 7,642.25 : x
2. Step 2: Convert to fraction form
   12,675.45/17,493.59 = 7,642.25/x
3. Step 3: Cross multiply
   12,675.45x = 17,493.59 × 7,642.25
4. Step 4: Simplify right side
   12,675.45x = 133,690,262.50
5. Step 5: Solve for x
   x = 133,690,262.50/12,675.45
6. Step 6: Final answer
   x = 10,547.18