Finding the Fourth Proportional to 10,354.42, 15,456.56 and 9,583.57

Step by Step Solution

1. Step 1: Write the proportion equation
   10,354.42 : 15,456.56 = 9,583.57 : x
2. Step 2: Convert to fraction form
   10,354.42/15,456.56 = 9,583.57/x
3. Step 3: Cross multiply
   10,354.42x = 15,456.56 × 9,583.57
4. Step 4: Simplify right side
   10,354.42x = 148,129,024.72
5. Step 5: Solve for x
   x = 148,129,024.72/10,354.42
6. Step 6: Final answer
   x = 14,305.87