Finding the Fourth Proportional to 12,856.50, 19,285.56 and 3,623.22

Step by Step Solution

1. Step 1: Write the proportion equation
   12,856.50 : 19,285.56 = 3,623.22 : x
2. Step 2: Convert to fraction form
   12,856.50/19,285.56 = 3,623.22/x
3. Step 3: Cross multiply
   12,856.50x = 19,285.56 × 3,623.22
4. Step 4: Simplify right side
   12,856.50x = 69,875,826.70
5. Step 5: Solve for x
   x = 69,875,826.70/12,856.50
6. Step 6: Final answer
   x = 5,435.06