Finding the Fourth Proportional to 16,678.50, 22,880.63 and 16,242.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,678.50 : 22,880.63 = 16,242.72 : x
2. Step 2: Convert to fraction form
   16,678.50/22,880.63 = 16,242.72/x
3. Step 3: Cross multiply
   16,678.50x = 22,880.63 × 16,242.72
4. Step 4: Simplify right side
   16,678.50x = 371,643,666.51
5. Step 5: Solve for x
   x = 371,643,666.51/16,678.50
6. Step 6: Final answer
   x = 22,282.80