Finding the Fourth Proportional to 12,756.72, 19,134.96 and 3,997.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,756.72 : 19,134.96 = 3,997.32 : x
2. Step 2: Convert to fraction form
   12,756.72/19,134.96 = 3,997.32/x
3. Step 3: Cross multiply
   12,756.72x = 19,134.96 × 3,997.32
4. Step 4: Simplify right side
   12,756.72x = 76,488,558.31
5. Step 5: Solve for x
   x = 76,488,558.31/12,756.72
6. Step 6: Final answer
   x = 5,995.94