Finding the Fourth Proportional to 22,977.50, 31,721.56 and 13,904.55

Step by Step Solution

1. Step 1: Write the proportion equation
   22,977.50 : 31,721.56 = 13,904.55 : x
2. Step 2: Convert to fraction form
   22,977.50/31,721.56 = 13,904.55/x
3. Step 3: Cross multiply
   22,977.50x = 31,721.56 × 13,904.55
4. Step 4: Simplify right side
   22,977.50x = 441,073,982.34
5. Step 5: Solve for x
   x = 441,073,982.34/22,977.50
6. Step 6: Final answer
   x = 19,195.91