Finding the Fourth Proportional to 16,616.04, 22,928.58 and 13,479.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,616.04 : 22,928.58 = 13,479.72 : x
2. Step 2: Convert to fraction form
   16,616.04/22,928.58 = 13,479.72/x
3. Step 3: Cross multiply
   16,616.04x = 22,928.58 × 13,479.72
4. Step 4: Simplify right side
   16,616.04x = 309,070,838.40
5. Step 5: Solve for x
   x = 309,070,838.40/16,616.04
6. Step 6: Final answer
   x = 18,600.75