Finding the Fourth Proportional to 39,402, 54,374.76 and 22,644.72

Step by Step Solution

1. Step 1: Write the proportion equation
   39,402 : 54,374.76 = 22,644.72 : x
2. Step 2: Convert to fraction form
   39,402/54,374.76 = 22,644.72/x
3. Step 3: Cross multiply
   39,402x = 54,374.76 × 22,644.72
4. Step 4: Simplify right side
   39,402x = 1,231,301,215.27
5. Step 5: Solve for x
   x = 1,231,301,215.27/39,402
6. Step 6: Final answer
   x = 31,249.71