Finding the Fourth Proportional to 23,169, 31,973.22 and 12,558.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,169 : 31,973.22 = 12,558.60 : x
2. Step 2: Convert to fraction form
   23,169/31,973.22 = 12,558.60/x
3. Step 3: Cross multiply
   23,169x = 31,973.22 × 12,558.60
4. Step 4: Simplify right side
   23,169x = 401,538,880.69
5. Step 5: Solve for x
   x = 401,538,880.69/23,169
6. Step 6: Final answer
   x = 17,330.87