Finding the Fourth Proportional to 12,672.15, 19,008.37 and 7,675.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,672.15 : 19,008.37 = 7,675.61 : x
2. Step 2: Convert to fraction form
   12,672.15/19,008.37 = 7,675.61/x
3. Step 3: Cross multiply
   12,672.15x = 19,008.37 × 7,675.61
4. Step 4: Simplify right side
   12,672.15x = 145,900,856.33
5. Step 5: Solve for x
   x = 145,900,856.33/12,672.15
6. Step 6: Final answer
   x = 11,513.51