Finding the Fourth Proportional to 21,368.34, 32,004.72 and 12,351.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,368.34 : 32,004.72 = 12,351.42 : x
2. Step 2: Convert to fraction form
   21,368.34/32,004.72 = 12,351.42/x
3. Step 3: Cross multiply
   21,368.34x = 32,004.72 × 12,351.42
4. Step 4: Simplify right side
   21,368.34x = 395,303,738.70
5. Step 5: Solve for x
   x = 395,303,738.70/21,368.34
6. Step 6: Final answer
   x = 18,499.51