Finding the Fourth Proportional to 23,056.06, 31,817.48 and 12,984.67

Step by Step Solution

1. Step 1: Write the proportion equation
   23,056.06 : 31,817.48 = 12,984.67 : x
2. Step 2: Convert to fraction form
   23,056.06/31,817.48 = 12,984.67/x
3. Step 3: Cross multiply
   23,056.06x = 31,817.48 × 12,984.67
4. Step 4: Simplify right side
   23,056.06x = 413,139,452.88
5. Step 5: Solve for x
   x = 413,139,452.88/23,056.06
6. Step 6: Final answer
   x = 17,918.91