Finding the Fourth Proportional to 15,632.96, 21,573.57 and 8,918.52

Step by Step Solution

1. Step 1: Write the proportion equation
   15,632.96 : 21,573.57 = 8,918.52 : x
2. Step 2: Convert to fraction form
   15,632.96/21,573.57 = 8,918.52/x
3. Step 3: Cross multiply
   15,632.96x = 21,573.57 × 8,918.52
4. Step 4: Simplify right side
   15,632.96x = 192,404,315.52
5. Step 5: Solve for x
   x = 192,404,315.52/15,632.96
6. Step 6: Final answer
   x = 12,307.61