Finding the Fourth Proportional to 13,658.42, 20,495.59 and 5,760.45

Step by Step Solution

1. Step 1: Write the proportion equation
   13,658.42 : 20,495.59 = 5,760.45 : x
2. Step 2: Convert to fraction form
   13,658.42/20,495.59 = 5,760.45/x
3. Step 3: Cross multiply
   13,658.42x = 20,495.59 × 5,760.45
4. Step 4: Simplify right side
   13,658.42x = 118,063,821.42
5. Step 5: Solve for x
   x = 118,063,821.42/13,658.42
6. Step 6: Final answer
   x = 8,644.03