Finding the Fourth Proportional to 12,807.50, 17,674.36 and 7,141.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,807.50 : 17,674.36 = 7,141.82 : x
2. Step 2: Convert to fraction form
   12,807.50/17,674.36 = 7,141.82/x
3. Step 3: Cross multiply
   12,807.50x = 17,674.36 × 7,141.82
4. Step 4: Simplify right side
   12,807.50x = 126,227,097.74
5. Step 5: Solve for x
   x = 126,227,097.74/12,807.50
6. Step 6: Final answer
   x = 9,855.72