Finding the Fourth Proportional to 14,380.52, 21,570.76 and 3,992.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,380.52 : 21,570.76 = 3,992.28 : x
2. Step 2: Convert to fraction form
   14,380.52/21,570.76 = 3,992.28/x
3. Step 3: Cross multiply
   14,380.52x = 21,570.76 × 3,992.28
4. Step 4: Simplify right side
   14,380.52x = 86,116,513.73
5. Step 5: Solve for x
   x = 86,116,513.73/14,380.52
6. Step 6: Final answer
   x = 5,988.41