Finding the Fourth Proportional to 20,499.52, 28,296.41 and 12,004.37

Step by Step Solution

1. Step 1: Write the proportion equation
   20,499.52 : 28,296.41 = 12,004.37 : x
2. Step 2: Convert to fraction form
   20,499.52/28,296.41 = 12,004.37/x
3. Step 3: Cross multiply
   20,499.52x = 28,296.41 × 12,004.37
4. Step 4: Simplify right side
   20,499.52x = 339,680,575.31
5. Step 5: Solve for x
   x = 339,680,575.31/20,499.52
6. Step 6: Final answer
   x = 16,570.17