Finding the Fourth Proportional to 25,736.34, 38,592.18 and 12,573.30

Step by Step Solution

1. Step 1: Write the proportion equation
   25,736.34 : 38,592.18 = 12,573.30 : x
2. Step 2: Convert to fraction form
   25,736.34/38,592.18 = 12,573.30/x
3. Step 3: Cross multiply
   25,736.34x = 38,592.18 × 12,573.30
4. Step 4: Simplify right side
   25,736.34x = 485,231,056.79
5. Step 5: Solve for x
   x = 485,231,056.79/25,736.34
6. Step 6: Final answer
   x = 18,853.93