Finding the Fourth Proportional to 10,356.42, 15,459.50 and 9,585.48

Step by Step Solution

1. Step 1: Write the proportion equation
   10,356.42 : 15,459.50 = 9,585.48 : x
2. Step 2: Convert to fraction form
   10,356.42/15,459.50 = 9,585.48/x
3. Step 3: Cross multiply
   10,356.42x = 15,459.50 × 9,585.48
4. Step 4: Simplify right side
   10,356.42x = 148,186,680.13
5. Step 5: Solve for x
   x = 148,186,680.13/10,356.42
6. Step 6: Final answer
   x = 14,308.68