Finding the Fourth Proportional to 28,460.10, 42,695.69 and 10,928.64

Step by Step Solution

1. Step 1: Write the proportion equation
   28,460.10 : 42,695.69 = 10,928.64 : x
2. Step 2: Convert to fraction form
   28,460.10/42,695.69 = 10,928.64/x
3. Step 3: Cross multiply
   28,460.10x = 42,695.69 × 10,928.64
4. Step 4: Simplify right side
   28,460.10x = 466,605,770.92
5. Step 5: Solve for x
   x = 466,605,770.92/28,460.10
6. Step 6: Final answer
   x = 16,395.09