Finding the Fourth Proportional to 12,467.76, 17,196.72 and 7,992.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,467.76 : 17,196.72 = 7,992.80 : x
2. Step 2: Convert to fraction form
   12,467.76/17,196.72 = 7,992.80/x
3. Step 3: Cross multiply
   12,467.76x = 17,196.72 × 7,992.80
4. Step 4: Simplify right side
   12,467.76x = 137,449,943.62
5. Step 5: Solve for x
   x = 137,449,943.62/12,467.76
6. Step 6: Final answer
   x = 11,024.43