Finding the Fourth Proportional to 12,792.61, 17,659.25 and 8,603.29

Step by Step Solution

1. Step 1: Write the proportion equation
   12,792.61 : 17,659.25 = 8,603.29 : x
2. Step 2: Convert to fraction form
   12,792.61/17,659.25 = 8,603.29/x
3. Step 3: Cross multiply
   12,792.61x = 17,659.25 × 8,603.29
4. Step 4: Simplify right side
   12,792.61x = 151,927,648.93
5. Step 5: Solve for x
   x = 151,927,648.93/12,792.61
6. Step 6: Final answer
   x = 11,876.20