Finding the Fourth Proportional to 12,872.45, 19,312.83 and 5,483.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,872.45 : 19,312.83 = 5,483.23 : x
2. Step 2: Convert to fraction form
   12,872.45/19,312.83 = 5,483.23/x
3. Step 3: Cross multiply
   12,872.45x = 19,312.83 × 5,483.23
4. Step 4: Simplify right side
   12,872.45x = 105,896,640.56
5. Step 5: Solve for x
   x = 105,896,640.56/12,872.45
6. Step 6: Final answer
   x = 8,226.61