Finding the Fourth Proportional to 16,880.32, 25,292.71 and 5,780.89

Step by Step Solution

1. Step 1: Write the proportion equation
   16,880.32 : 25,292.71 = 5,780.89 : x
2. Step 2: Convert to fraction form
   16,880.32/25,292.71 = 5,780.89/x
3. Step 3: Cross multiply
   16,880.32x = 25,292.71 × 5,780.89
4. Step 4: Simplify right side
   16,880.32x = 146,214,374.31
5. Step 5: Solve for x
   x = 146,214,374.31/16,880.32
6. Step 6: Final answer
   x = 8,661.82