Finding the Fourth Proportional to 23,031.05, 31,783.46 and 12,959.84

Step by Step Solution

1. Step 1: Write the proportion equation
   23,031.05 : 31,783.46 = 12,959.84 : x
2. Step 2: Convert to fraction form
   23,031.05/31,783.46 = 12,959.84/x
3. Step 3: Cross multiply
   23,031.05x = 31,783.46 × 12,959.84
4. Step 4: Simplify right side
   23,031.05x = 411,908,332.53
5. Step 5: Solve for x
   x = 411,908,332.53/23,031.05
6. Step 6: Final answer
   x = 17,884.92