Finding the Fourth Proportional to 12,972.72, 19,465.44 and 8,041.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,972.72 : 19,465.44 = 8,041.05 : x
2. Step 2: Convert to fraction form
   12,972.72/19,465.44 = 8,041.05/x
3. Step 3: Cross multiply
   12,972.72x = 19,465.44 × 8,041.05
4. Step 4: Simplify right side
   12,972.72x = 156,522,576.31
5. Step 5: Solve for x
   x = 156,522,576.31/12,972.72
6. Step 6: Final answer
   x = 12,065.52