Finding the Fourth Proportional to 28,105.32, 42,146.46 and 10,566.12

Step by Step Solution

1. Step 1: Write the proportion equation
   28,105.32 : 42,146.46 = 10,566.12 : x
2. Step 2: Convert to fraction form
   28,105.32/42,146.46 = 10,566.12/x
3. Step 3: Cross multiply
   28,105.32x = 42,146.46 × 10,566.12
4. Step 4: Simplify right side
   28,105.32x = 445,324,553.94
5. Step 5: Solve for x
   x = 445,324,553.94/28,105.32
6. Step 6: Final answer
   x = 15,844.85