Finding the Fourth Proportional to 12,992.88, 19,484.72 and 4,226.16

Step by Step Solution

1. Step 1: Write the proportion equation
   12,992.88 : 19,484.72 = 4,226.16 : x
2. Step 2: Convert to fraction form
   12,992.88/19,484.72 = 4,226.16/x
3. Step 3: Cross multiply
   12,992.88x = 19,484.72 × 4,226.16
4. Step 4: Simplify right side
   12,992.88x = 82,345,544.28
5. Step 5: Solve for x
   x = 82,345,544.28/12,992.88
6. Step 6: Final answer
   x = 6,337.74