Finding the Fourth Proportional to 10,961.73, 16,448.67 and 4,386.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,961.73 : 16,448.67 = 4,386.15 : x
2. Step 2: Convert to fraction form
   10,961.73/16,448.67 = 4,386.15/x
3. Step 3: Cross multiply
   10,961.73x = 16,448.67 × 4,386.15
4. Step 4: Simplify right side
   10,961.73x = 72,146,333.92
5. Step 5: Solve for x
   x = 72,146,333.92/10,961.73
6. Step 6: Final answer
   x = 6,581.66