Finding the Fourth Proportional to 12,463.20, 17,199.77 and 7,159.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,463.20 : 17,199.77 = 7,159.68 : x
2. Step 2: Convert to fraction form
   12,463.20/17,199.77 = 7,159.68/x
3. Step 3: Cross multiply
   12,463.20x = 17,199.77 × 7,159.68
4. Step 4: Simplify right side
   12,463.20x = 123,144,813.48
5. Step 5: Solve for x
   x = 123,144,813.48/12,463.20
6. Step 6: Final answer
   x = 9,880.67