Finding the Fourth Proportional to 23,111.67, 34,674.45 and 9,777.79

Step by Step Solution

1. Step 1: Write the proportion equation
   23,111.67 : 34,674.45 = 9,777.79 : x
2. Step 2: Convert to fraction form
   23,111.67/34,674.45 = 9,777.79/x
3. Step 3: Cross multiply
   23,111.67x = 34,674.45 × 9,777.79
4. Step 4: Simplify right side
   23,111.67x = 339,039,490.47
5. Step 5: Solve for x
   x = 339,039,490.47/23,111.67
6. Step 6: Final answer
   x = 14,669.62