Finding the Fourth Proportional to 23,050.62, 31,810.41 and 12,979.40

Step by Step Solution

1. Step 1: Write the proportion equation
   23,050.62 : 31,810.41 = 12,979.40 : x
2. Step 2: Convert to fraction form
   23,050.62/31,810.41 = 12,979.40/x
3. Step 3: Cross multiply
   23,050.62x = 31,810.41 × 12,979.40
4. Step 4: Simplify right side
   23,050.62x = 412,880,035.55
5. Step 5: Solve for x
   x = 412,880,035.55/23,050.62
6. Step 6: Final answer
   x = 17,911.88