Finding the Fourth Proportional to 31,789.79, 47,685.49 and 9,603.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,789.79 : 47,685.49 = 9,603.89 : x
2. Step 2: Convert to fraction form
   31,789.79/47,685.49 = 9,603.89/x
3. Step 3: Cross multiply
   31,789.79x = 47,685.49 × 9,603.89
4. Step 4: Simplify right side
   31,789.79x = 457,966,200.56
5. Step 5: Solve for x
   x = 457,966,200.56/31,789.79
6. Step 6: Final answer
   x = 14,406.08