Finding the Fourth Proportional to 9,890.20, 14,815.86 and 5,984.92

Step by Step Solution

1. Step 1: Write the proportion equation
   9,890.20 : 14,815.86 = 5,984.92 : x
2. Step 2: Convert to fraction form
   9,890.20/14,815.86 = 5,984.92/x
3. Step 3: Cross multiply
   9,890.20x = 14,815.86 × 5,984.92
4. Step 4: Simplify right side
   9,890.20x = 88,671,736.83
5. Step 5: Solve for x
   x = 88,671,736.83/9,890.20
6. Step 6: Final answer
   x = 8,965.62