Finding the Fourth Proportional to 12,792.88, 17,653.91 and 7,127.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,792.88 : 17,653.91 = 7,127.60 : x
2. Step 2: Convert to fraction form
   12,792.88/17,653.91 = 7,127.60/x
3. Step 3: Cross multiply
   12,792.88x = 17,653.91 × 7,127.60
4. Step 4: Simplify right side
   12,792.88x = 125,830,017.41
5. Step 5: Solve for x
   x = 125,830,017.41/12,792.88
6. Step 6: Final answer
   x = 9,835.94