Finding the Fourth Proportional to 28,323.02, 42,459.69 and 10,781.18

Step by Step Solution

1. Step 1: Write the proportion equation
   28,323.02 : 42,459.69 = 10,781.18 : x
2. Step 2: Convert to fraction form
   28,323.02/42,459.69 = 10,781.18/x
3. Step 3: Cross multiply
   28,323.02x = 42,459.69 × 10,781.18
4. Step 4: Simplify right side
   28,323.02x = 457,765,560.63
5. Step 5: Solve for x
   x = 457,765,560.63/28,323.02
6. Step 6: Final answer
   x = 16,162.31