Finding the Fourth Proportional to 12,974.77, 19,484.03 and 12,872.71

Step by Step Solution

1. Step 1: Write the proportion equation
   12,974.77 : 19,484.03 = 12,872.71 : x
2. Step 2: Convert to fraction form
   12,974.77/19,484.03 = 12,872.71/x
3. Step 3: Cross multiply
   12,974.77x = 19,484.03 × 12,872.71
4. Step 4: Simplify right side
   12,974.77x = 250,812,267.82
5. Step 5: Solve for x
   x = 250,812,267.82/12,974.77
6. Step 6: Final answer
   x = 19,330.77