Finding the Fourth Proportional to 10,081.05, 15,120.53 and 3,060.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,081.05 : 15,120.53 = 3,060.78 : x
2. Step 2: Convert to fraction form
   10,081.05/15,120.53 = 3,060.78/x
3. Step 3: Cross multiply
   10,081.05x = 15,120.53 × 3,060.78
4. Step 4: Simplify right side
   10,081.05x = 46,280,555.29
5. Step 5: Solve for x
   x = 46,280,555.29/10,081.05
6. Step 6: Final answer
   x = 4,590.85