Finding the Fourth Proportional to 28,361.91, 42,498.72 and 10,822.17

Step by Step Solution

1. Step 1: Write the proportion equation
   28,361.91 : 42,498.72 = 10,822.17 : x
2. Step 2: Convert to fraction form
   28,361.91/42,498.72 = 10,822.17/x
3. Step 3: Cross multiply
   28,361.91x = 42,498.72 × 10,822.17
4. Step 4: Simplify right side
   28,361.91x = 459,928,372.62
5. Step 5: Solve for x
   x = 459,928,372.62/28,361.91
6. Step 6: Final answer
   x = 16,216.41