Finding the Fourth Proportional to 14,061.27, 21,081.31 and 8,513.28

Step by Step Solution

1. Step 1: Write the proportion equation
   14,061.27 : 21,081.31 = 8,513.28 : x
2. Step 2: Convert to fraction form
   14,061.27/21,081.31 = 8,513.28/x
3. Step 3: Cross multiply
   14,061.27x = 21,081.31 × 8,513.28
4. Step 4: Simplify right side
   14,061.27x = 179,471,062.11
5. Step 5: Solve for x
   x = 179,471,062.11/14,061.27
6. Step 6: Final answer
   x = 12,763.50