Finding the Fourth Proportional to 12,645.46, 17,451.72 and 9,303.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,645.46 : 17,451.72 = 9,303.61 : x
2. Step 2: Convert to fraction form
   12,645.46/17,451.72 = 9,303.61/x
3. Step 3: Cross multiply
   12,645.46x = 17,451.72 × 9,303.61
4. Step 4: Simplify right side
   12,645.46x = 162,363,996.71
5. Step 5: Solve for x
   x = 162,363,996.71/12,645.46
6. Step 6: Final answer
   x = 12,839.71