Finding the Fourth Proportional to 10,911.81, 15,061.92 and 6,436.83

Step by Step Solution

1. Step 1: Write the proportion equation
   10,911.81 : 15,061.92 = 6,436.83 : x
2. Step 2: Convert to fraction form
   10,911.81/15,061.92 = 6,436.83/x
3. Step 3: Cross multiply
   10,911.81x = 15,061.92 × 6,436.83
4. Step 4: Simplify right side
   10,911.81x = 96,951,018.51
5. Step 5: Solve for x
   x = 96,951,018.51/10,911.81
6. Step 6: Final answer
   x = 8,884.96