Finding the Fourth Proportional to 12,364.74, 18,553.20 and 5,789.79

Step by Step Solution

1. Step 1: Write the proportion equation
   12,364.74 : 18,553.20 = 5,789.79 : x
2. Step 2: Convert to fraction form
   12,364.74/18,553.20 = 5,789.79/x
3. Step 3: Cross multiply
   12,364.74x = 18,553.20 × 5,789.79
4. Step 4: Simplify right side
   12,364.74x = 107,419,131.83
5. Step 5: Solve for x
   x = 107,419,131.83/12,364.74
6. Step 6: Final answer
   x = 8,687.54