Finding the Fourth Proportional to 12,021.47, 16,662.34 and 11,329.32

Step by Step Solution

1. Step 1: Write the proportion equation
   12,021.47 : 16,662.34 = 11,329.32 : x
2. Step 2: Convert to fraction form
   12,021.47/16,662.34 = 11,329.32/x
3. Step 3: Cross multiply
   12,021.47x = 16,662.34 × 11,329.32
4. Step 4: Simplify right side
   12,021.47x = 188,772,981.81
5. Step 5: Solve for x
   x = 188,772,981.81/12,021.47
6. Step 6: Final answer
   x = 15,702.99