Finding the Fourth Proportional to 12,396.72, 17,106.98 and 7,092.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,396.72 : 17,106.98 = 7,092.02 : x
2. Step 2: Convert to fraction form
   12,396.72/17,106.98 = 7,092.02/x
3. Step 3: Cross multiply
   12,396.72x = 17,106.98 × 7,092.02
4. Step 4: Simplify right side
   12,396.72x = 121,323,044.30
5. Step 5: Solve for x
   x = 121,323,044.30/12,396.72
6. Step 6: Final answer
   x = 9,786.71