Finding the Fourth Proportional to 31,796.07, 47,695.01 and 8,422.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,796.07 : 47,695.01 = 8,422.50 : x
2. Step 2: Convert to fraction form
   31,796.07/47,695.01 = 8,422.50/x
3. Step 3: Cross multiply
   31,796.07x = 47,695.01 × 8,422.50
4. Step 4: Simplify right side
   31,796.07x = 401,711,179.61
5. Step 5: Solve for x
   x = 401,711,179.61/31,796.07
6. Step 6: Final answer
   x = 12,633.99