Finding the Fourth Proportional to 28,638.96, 42,961.23 and 10,632.03

Step by Step Solution

1. Step 1: Write the proportion equation
   28,638.96 : 42,961.23 = 10,632.03 : x
2. Step 2: Convert to fraction form
   28,638.96/42,961.23 = 10,632.03/x
3. Step 3: Cross multiply
   28,638.96x = 42,961.23 × 10,632.03
4. Step 4: Simplify right side
   28,638.96x = 456,765,086.20
5. Step 5: Solve for x
   x = 456,765,086.20/28,638.96
6. Step 6: Final answer
   x = 15,949.08