Finding the Fourth Proportional to 15,523.59, 21,421.89 and 8,450.04

Step by Step Solution

1. Step 1: Write the proportion equation
   15,523.59 : 21,421.89 = 8,450.04 : x
2. Step 2: Convert to fraction form
   15,523.59/21,421.89 = 8,450.04/x
3. Step 3: Cross multiply
   15,523.59x = 21,421.89 × 8,450.04
4. Step 4: Simplify right side
   15,523.59x = 181,015,827.38
5. Step 5: Solve for x
   x = 181,015,827.38/15,523.59
6. Step 6: Final answer
   x = 11,660.69