Finding the Fourth Proportional to 16,749.72, 25,122.86 and 8,426.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,749.72 : 25,122.86 = 8,426.34 : x
2. Step 2: Convert to fraction form
   16,749.72/25,122.86 = 8,426.34/x
3. Step 3: Cross multiply
   16,749.72x = 25,122.86 × 8,426.34
4. Step 4: Simplify right side
   16,749.72x = 211,693,760.13
5. Step 5: Solve for x
   x = 211,693,760.13/16,749.72
6. Step 6: Final answer
   x = 12,638.64