Finding the Fourth Proportional to 22,473.63, 31,013.85 and 12,402.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,473.63 : 31,013.85 = 12,402.42 : x
2. Step 2: Convert to fraction form
   22,473.63/31,013.85 = 12,402.42/x
3. Step 3: Cross multiply
   22,473.63x = 31,013.85 × 12,402.42
4. Step 4: Simplify right side
   22,473.63x = 384,646,793.52
5. Step 5: Solve for x
   x = 384,646,793.52/22,473.63
6. Step 6: Final answer
   x = 17,115.47