Finding the Fourth Proportional to 10,881.24, 16,321.51 and 3,090.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,881.24 : 16,321.51 = 3,090.05 : x
2. Step 2: Convert to fraction form
   10,881.24/16,321.51 = 3,090.05/x
3. Step 3: Cross multiply
   10,881.24x = 16,321.51 × 3,090.05
4. Step 4: Simplify right side
   10,881.24x = 50,434,269.78
5. Step 5: Solve for x
   x = 50,434,269.78/10,881.24
6. Step 6: Final answer
   x = 4,634.98