Finding the Fourth Proportional to 12,672.30, 17,487.67 and 7,007.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,672.30 : 17,487.67 = 7,007.30 : x
2. Step 2: Convert to fraction form
   12,672.30/17,487.67 = 7,007.30/x
3. Step 3: Cross multiply
   12,672.30x = 17,487.67 × 7,007.30
4. Step 4: Simplify right side
   12,672.30x = 122,541,227.52
5. Step 5: Solve for x
   x = 122,541,227.52/12,672.30
6. Step 6: Final answer
   x = 9,670.01