Finding the Fourth Proportional to 21,561.48, 32,315.58 and 9,077.13

Step by Step Solution

1. Step 1: Write the proportion equation
   21,561.48 : 32,315.58 = 9,077.13 : x
2. Step 2: Convert to fraction form
   21,561.48/32,315.58 = 9,077.13/x
3. Step 3: Cross multiply
   21,561.48x = 32,315.58 × 9,077.13
4. Step 4: Simplify right side
   21,561.48x = 293,332,720.69
5. Step 5: Solve for x
   x = 293,332,720.69/21,561.48
6. Step 6: Final answer
   x = 13,604.48