Finding the Fourth Proportional to 12,642.53, 17,443.10 and 7,604.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,642.53 : 17,443.10 = 7,604.23 : x
2. Step 2: Convert to fraction form
   12,642.53/17,443.10 = 7,604.23/x
3. Step 3: Cross multiply
   12,642.53x = 17,443.10 × 7,604.23
4. Step 4: Simplify right side
   12,642.53x = 132,641,306.29
5. Step 5: Solve for x
   x = 132,641,306.29/12,642.53
6. Step 6: Final answer
   x = 10,491.67