Finding the Fourth Proportional to 22,493.76, 33,730.20 and 13,136.56

Step by Step Solution

1. Step 1: Write the proportion equation
   22,493.76 : 33,730.20 = 13,136.56 : x
2. Step 2: Convert to fraction form
   22,493.76/33,730.20 = 13,136.56/x
3. Step 3: Cross multiply
   22,493.76x = 33,730.20 × 13,136.56
4. Step 4: Simplify right side
   22,493.76x = 443,098,796.11
5. Step 5: Solve for x
   x = 443,098,796.11/22,493.76
6. Step 6: Final answer
   x = 19,698.74