Finding the Fourth Proportional to 15,672.54, 21,628.72 and 8,598.82

Step by Step Solution

1. Step 1: Write the proportion equation
   15,672.54 : 21,628.72 = 8,598.82 : x
2. Step 2: Convert to fraction form
   15,672.54/21,628.72 = 8,598.82/x
3. Step 3: Cross multiply
   15,672.54x = 21,628.72 × 8,598.82
4. Step 4: Simplify right side
   15,672.54x = 185,981,470.11
5. Step 5: Solve for x
   x = 185,981,470.11/15,672.54
6. Step 6: Final answer
   x = 11,866.71