Finding the Fourth Proportional to 28,633.39, 42,954.18 and 8,913.94

Step by Step Solution

1. Step 1: Write the proportion equation
   28,633.39 : 42,954.18 = 8,913.94 : x
2. Step 2: Convert to fraction form
   28,633.39/42,954.18 = 8,913.94/x
3. Step 3: Cross multiply
   28,633.39x = 42,954.18 × 8,913.94
4. Step 4: Simplify right side
   28,633.39x = 382,890,983.27
5. Step 5: Solve for x
   x = 382,890,983.27/28,633.39
6. Step 6: Final answer
   x = 13,372.18