Finding the Fourth Proportional to 22,473.48, 31,013.73 and 12,402.39

Step by Step Solution

1. Step 1: Write the proportion equation
   22,473.48 : 31,013.73 = 12,402.39 : x
2. Step 2: Convert to fraction form
   22,473.48/31,013.73 = 12,402.39/x
3. Step 3: Cross multiply
   22,473.48x = 31,013.73 × 12,402.39
4. Step 4: Simplify right side
   22,473.48x = 384,644,374.81
5. Step 5: Solve for x
   x = 384,644,374.81/22,473.48
6. Step 6: Final answer
   x = 17,115.48