Finding the Fourth Proportional to 8,914.42, 12,300.42 and 5,728.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,914.42 : 12,300.42 = 5,728.42 : x
2. Step 2: Convert to fraction form
   8,914.42/12,300.42 = 5,728.42/x
3. Step 3: Cross multiply
   8,914.42x = 12,300.42 × 5,728.42
4. Step 4: Simplify right side
   8,914.42x = 70,461,971.94
5. Step 5: Solve for x
   x = 70,461,971.94/8,914.42
6. Step 6: Final answer
   x = 7,904.27