Finding the Fourth Proportional to 10,145.92, 14,005.28 and 9,081.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,145.92 : 14,005.28 = 9,081.80 : x
2. Step 2: Convert to fraction form
   10,145.92/14,005.28 = 9,081.80/x
3. Step 3: Cross multiply
   10,145.92x = 14,005.28 × 9,081.80
4. Step 4: Simplify right side
   10,145.92x = 127,193,141.51
5. Step 5: Solve for x
   x = 127,193,141.51/10,145.92
6. Step 6: Final answer
   x = 12,536.39