Finding the Fourth Proportional to 10,875.06, 16,309.08 and 3,081.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,875.06 : 16,309.08 = 3,081.78 : x
2. Step 2: Convert to fraction form
   10,875.06/16,309.08 = 3,081.78/x
3. Step 3: Cross multiply
   10,875.06x = 16,309.08 × 3,081.78
4. Step 4: Simplify right side
   10,875.06x = 50,260,996.56
5. Step 5: Solve for x
   x = 50,260,996.56/10,875.06
6. Step 6: Final answer
   x = 4,621.68