Finding the Fourth Proportional to 10,856.10, 16,285.05 and 3,460.35

Step by Step Solution

1. Step 1: Write the proportion equation
   10,856.10 : 16,285.05 = 3,460.35 : x
2. Step 2: Convert to fraction form
   10,856.10/16,285.05 = 3,460.35/x
3. Step 3: Cross multiply
   10,856.10x = 16,285.05 × 3,460.35
4. Step 4: Simplify right side
   10,856.10x = 56,351,972.77
5. Step 5: Solve for x
   x = 56,351,972.77/10,856.10
6. Step 6: Final answer
   x = 5,190.81