Finding the Fourth Proportional to 16,899.84, 23,321.06 and 9,825.72

Step by Step Solution

1. Step 1: Write the proportion equation
   16,899.84 : 23,321.06 = 9,825.72 : x
2. Step 2: Convert to fraction form
   16,899.84/23,321.06 = 9,825.72/x
3. Step 3: Cross multiply
   16,899.84x = 23,321.06 × 9,825.72
4. Step 4: Simplify right side
   16,899.84x = 229,146,205.66
5. Step 5: Solve for x
   x = 229,146,205.66/16,899.84
6. Step 6: Final answer
   x = 13,559.08