Finding the Fourth Proportional to 12,178.71, 16,804.82 and 7,141.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,178.71 : 16,804.82 = 7,141.03 : x
2. Step 2: Convert to fraction form
   12,178.71/16,804.82 = 7,141.03/x
3. Step 3: Cross multiply
   12,178.71x = 16,804.82 × 7,141.03
4. Step 4: Simplify right side
   12,178.71x = 120,003,699.61
5. Step 5: Solve for x
   x = 120,003,699.61/12,178.71
6. Step 6: Final answer
   x = 9,853.56