Finding the Fourth Proportional to 10,741.78, 16,119.05 and 5,811.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,741.78 : 16,119.05 = 5,811.31 : x
2. Step 2: Convert to fraction form
   10,741.78/16,119.05 = 5,811.31/x
3. Step 3: Cross multiply
   10,741.78x = 16,119.05 × 5,811.31
4. Step 4: Simplify right side
   10,741.78x = 93,672,796.46
5. Step 5: Solve for x
   x = 93,672,796.46/10,741.78
6. Step 6: Final answer
   x = 8,720.42