Finding the Fourth Proportional to 31,796.56, 47,695.76 and 8,423

Step by Step Solution

1. Step 1: Write the proportion equation
   31,796.56 : 47,695.76 = 8,423 : x
2. Step 2: Convert to fraction form
   31,796.56/47,695.76 = 8,423/x
3. Step 3: Cross multiply
   31,796.56x = 47,695.76 × 8,423
4. Step 4: Simplify right side
   31,796.56x = 401,741,386.48
5. Step 5: Solve for x
   x = 401,741,386.48/31,796.56
6. Step 6: Final answer
   x = 12,634.74