Finding the Fourth Proportional to 28,401.42, 42,569.78 and 17,283.62

Step by Step Solution

1. Step 1: Write the proportion equation
   28,401.42 : 42,569.78 = 17,283.62 : x
2. Step 2: Convert to fraction form
   28,401.42/42,569.78 = 17,283.62/x
3. Step 3: Cross multiply
   28,401.42x = 42,569.78 × 17,283.62
4. Step 4: Simplify right side
   28,401.42x = 735,759,901.00
5. Step 5: Solve for x
   x = 735,759,901.00/28,401.42
6. Step 6: Final answer
   x = 25,905.74