Finding the Fourth Proportional to 16,620.21, 22,957.76 and 12,322.01

Step by Step Solution

1. Step 1: Write the proportion equation
   16,620.21 : 22,957.76 = 12,322.01 : x
2. Step 2: Convert to fraction form
   16,620.21/22,957.76 = 12,322.01/x
3. Step 3: Cross multiply
   16,620.21x = 22,957.76 × 12,322.01
4. Step 4: Simplify right side
   16,620.21x = 282,885,836.50
5. Step 5: Solve for x
   x = 282,885,836.50/16,620.21
6. Step 6: Final answer
   x = 17,020.59