Finding the Fourth Proportional to 9,712.89, 14,565.68 and 3,137.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,712.89 : 14,565.68 = 3,137.31 : x
2. Step 2: Convert to fraction form
   9,712.89/14,565.68 = 3,137.31/x
3. Step 3: Cross multiply
   9,712.89x = 14,565.68 × 3,137.31
4. Step 4: Simplify right side
   9,712.89x = 45,697,037.83
5. Step 5: Solve for x
   x = 45,697,037.83/9,712.89
6. Step 6: Final answer
   x = 4,704.78