Finding the Fourth Proportional to 16,724.18, 25,088.72 and 8,928.74

Step by Step Solution

1. Step 1: Write the proportion equation
   16,724.18 : 25,088.72 = 8,928.74 : x
2. Step 2: Convert to fraction form
   16,724.18/25,088.72 = 8,928.74/x
3. Step 3: Cross multiply
   16,724.18x = 25,088.72 × 8,928.74
4. Step 4: Simplify right side
   16,724.18x = 224,010,675.89
5. Step 5: Solve for x
   x = 224,010,675.89/16,724.18
6. Step 6: Final answer
   x = 13,394.42