Finding the Fourth Proportional to 12,907.29, 17,811.78 and 7,241.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,907.29 : 17,811.78 = 7,241.94 : x
2. Step 2: Convert to fraction form
   12,907.29/17,811.78 = 7,241.94/x
3. Step 3: Cross multiply
   12,907.29x = 17,811.78 × 7,241.94
4. Step 4: Simplify right side
   12,907.29x = 128,991,842.05
5. Step 5: Solve for x
   x = 128,991,842.05/12,907.29
6. Step 6: Final answer
   x = 9,993.72