Finding the Fourth Proportional to 12,972.17, 17,885.22 and 8,488.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,972.17 : 17,885.22 = 8,488.82 : x
2. Step 2: Convert to fraction form
   12,972.17/17,885.22 = 8,488.82/x
3. Step 3: Cross multiply
   12,972.17x = 17,885.22 × 8,488.82
4. Step 4: Simplify right side
   12,972.17x = 151,824,413.24
5. Step 5: Solve for x
   x = 151,824,413.24/12,972.17
6. Step 6: Final answer
   x = 11,703.86