Finding the Fourth Proportional to 12,426.46, 17,147.24 and 7,646.70

Step by Step Solution

1. Step 1: Write the proportion equation
   12,426.46 : 17,147.24 = 7,646.70 : x
2. Step 2: Convert to fraction form
   12,426.46/17,147.24 = 7,646.70/x
3. Step 3: Cross multiply
   12,426.46x = 17,147.24 × 7,646.70
4. Step 4: Simplify right side
   12,426.46x = 131,119,897.86
5. Step 5: Solve for x
   x = 131,119,897.86/12,426.46
6. Step 6: Final answer
   x = 10,551.67