Finding the Fourth Proportional to 28,527.77, 42,786.18 and 10,995.32

Step by Step Solution

1. Step 1: Write the proportion equation
   28,527.77 : 42,786.18 = 10,995.32 : x
2. Step 2: Convert to fraction form
   28,527.77/42,786.18 = 10,995.32/x
3. Step 3: Cross multiply
   28,527.77x = 42,786.18 × 10,995.32
4. Step 4: Simplify right side
   28,527.77x = 470,447,526.75
5. Step 5: Solve for x
   x = 470,447,526.75/28,527.77
6. Step 6: Final answer
   x = 16,490.87