Finding the Fourth Proportional to 12,857.43, 19,280.48 and 4,535.00

Step by Step Solution

1. Step 1: Write the proportion equation
   12,857.43 : 19,280.48 = 4,535.00 : x
2. Step 2: Convert to fraction form
   12,857.43/19,280.48 = 4,535.00/x
3. Step 3: Cross multiply
   12,857.43x = 19,280.48 × 4,535.00
4. Step 4: Simplify right side
   12,857.43x = 87,436,857.72
5. Step 5: Solve for x
   x = 87,436,857.72/12,857.43
6. Step 6: Final answer
   x = 6,800.49