Finding the Fourth Proportional to 9,389.43, 12,957.71 and 5,410.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,389.43 : 12,957.71 = 5,410.71 : x
2. Step 2: Convert to fraction form
   9,389.43/12,957.71 = 5,410.71/x
3. Step 3: Cross multiply
   9,389.43x = 12,957.71 × 5,410.71
4. Step 4: Simplify right side
   9,389.43x = 70,110,384.02
5. Step 5: Solve for x
   x = 70,110,384.02/9,389.43
6. Step 6: Final answer
   x = 7,466.95