Finding the Fourth Proportional to 12,792.69, 17,647.16 and 8,806.91

Step by Step Solution

1. Step 1: Write the proportion equation
   12,792.69 : 17,647.16 = 8,806.91 : x
2. Step 2: Convert to fraction form
   12,792.69/17,647.16 = 8,806.91/x
3. Step 3: Cross multiply
   12,792.69x = 17,647.16 × 8,806.91
4. Step 4: Simplify right side
   12,792.69x = 155,416,817.61
5. Step 5: Solve for x
   x = 155,416,817.61/12,792.69
6. Step 6: Final answer
   x = 12,148.88