Finding the Fourth Proportional to 22,761.63, 31,408.52 and 13,811.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,761.63 : 31,408.52 = 13,811.31 : x
2. Step 2: Convert to fraction form
   22,761.63/31,408.52 = 13,811.31/x
3. Step 3: Cross multiply
   22,761.63x = 31,408.52 × 13,811.31
4. Step 4: Simplify right side
   22,761.63x = 433,792,737.30
5. Step 5: Solve for x
   x = 433,792,737.30/22,761.63
6. Step 6: Final answer
   x = 19,058.07