Finding the Fourth Proportional to 22,930, 31,643.88 and 12,994

Step by Step Solution

1. Step 1: Write the proportion equation
   22,930 : 31,643.88 = 12,994 : x
2. Step 2: Convert to fraction form
   22,930/31,643.88 = 12,994/x
3. Step 3: Cross multiply
   22,930x = 31,643.88 × 12,994
4. Step 4: Simplify right side
   22,930x = 411,180,576.72
5. Step 5: Solve for x
   x = 411,180,576.72/22,930
6. Step 6: Final answer
   x = 17,931.99