Finding the Fourth Proportional to 12,389.43, 17,091.83 and 7,353.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,389.43 : 17,091.83 = 7,353.86 : x
2. Step 2: Convert to fraction form
   12,389.43/17,091.83 = 7,353.86/x
3. Step 3: Cross multiply
   12,389.43x = 17,091.83 × 7,353.86
4. Step 4: Simplify right side
   12,389.43x = 125,690,986.08
5. Step 5: Solve for x
   x = 125,690,986.08/12,389.43
6. Step 6: Final answer
   x = 10,145.02