Finding the Fourth Proportional to 16,899.63, 23,321.69 and 9,346.58

Step by Step Solution

1. Step 1: Write the proportion equation
   16,899.63 : 23,321.69 = 9,346.58 : x
2. Step 2: Convert to fraction form
   16,899.63/23,321.69 = 9,346.58/x
3. Step 3: Cross multiply
   16,899.63x = 23,321.69 × 9,346.58
4. Step 4: Simplify right side
   16,899.63x = 217,978,041.32
5. Step 5: Solve for x
   x = 217,978,041.32/16,899.63
6. Step 6: Final answer
   x = 12,898.39