Finding the Fourth Proportional to 22,869.76, 31,554.56 and 13,436.48

Step by Step Solution

1. Step 1: Write the proportion equation
   22,869.76 : 31,554.56 = 13,436.48 : x
2. Step 2: Convert to fraction form
   22,869.76/31,554.56 = 13,436.48/x
3. Step 3: Cross multiply
   22,869.76x = 31,554.56 × 13,436.48
4. Step 4: Simplify right side
   22,869.76x = 423,982,214.35
5. Step 5: Solve for x
   x = 423,982,214.35/22,869.76
6. Step 6: Final answer
   x = 18,538.99