Finding the Fourth Proportional to 12,976.48, 17,911.92 and 9,002.86

Step by Step Solution

1. Step 1: Write the proportion equation
   12,976.48 : 17,911.92 = 9,002.86 : x
2. Step 2: Convert to fraction form
   12,976.48/17,911.92 = 9,002.86/x
3. Step 3: Cross multiply
   12,976.48x = 17,911.92 × 9,002.86
4. Step 4: Simplify right side
   12,976.48x = 161,258,508.09
5. Step 5: Solve for x
   x = 161,258,508.09/12,976.48
6. Step 6: Final answer
   x = 12,426.98