Finding the Fourth Proportional to 9,753.39, 14,638.59 and 8,645.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,753.39 : 14,638.59 = 8,645.31 : x
2. Step 2: Convert to fraction form
   9,753.39/14,638.59 = 8,645.31/x
3. Step 3: Cross multiply
   9,753.39x = 14,638.59 × 8,645.31
4. Step 4: Simplify right side
   9,753.39x = 126,555,148.51
5. Step 5: Solve for x
   x = 126,555,148.51/9,753.39
6. Step 6: Final answer
   x = 12,975.50