Finding the Fourth Proportional to 12,141.81, 16,755.76 and 7,105.05

Step by Step Solution

1. Step 1: Write the proportion equation
   12,141.81 : 16,755.76 = 7,105.05 : x
2. Step 2: Convert to fraction form
   12,141.81/16,755.76 = 7,105.05/x
3. Step 3: Cross multiply
   12,141.81x = 16,755.76 × 7,105.05
4. Step 4: Simplify right side
   12,141.81x = 119,050,428.81
5. Step 5: Solve for x
   x = 119,050,428.81/12,141.81
6. Step 6: Final answer
   x = 9,805.00