Finding the Fourth Proportional to 12,967, 19,453.98 and 5,181.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,967 : 19,453.98 = 5,181.28 : x
2. Step 2: Convert to fraction form
   12,967/19,453.98 = 5,181.28/x
3. Step 3: Cross multiply
   12,967x = 19,453.98 × 5,181.28
4. Step 4: Simplify right side
   12,967x = 100,796,517.49
5. Step 5: Solve for x
   x = 100,796,517.49/12,967
6. Step 6: Final answer
   x = 7,773.31