Finding the Fourth Proportional to 9,559.78, 14,337.23 and 2,986.63

Step by Step Solution

1. Step 1: Write the proportion equation
   9,559.78 : 14,337.23 = 2,986.63 : x
2. Step 2: Convert to fraction form
   9,559.78/14,337.23 = 2,986.63/x
3. Step 3: Cross multiply
   9,559.78x = 14,337.23 × 2,986.63
4. Step 4: Simplify right side
   9,559.78x = 42,819,929.55
5. Step 5: Solve for x
   x = 42,819,929.55/9,559.78
6. Step 6: Final answer
   x = 4,479.18