Finding the Fourth Proportional to 21,876.57, 30,173.55 and 16,499.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,876.57 : 30,173.55 = 16,499.24 : x
2. Step 2: Convert to fraction form
   21,876.57/30,173.55 = 16,499.24/x
3. Step 3: Cross multiply
   21,876.57x = 30,173.55 × 16,499.24
4. Step 4: Simplify right side
   21,876.57x = 497,840,492.23
5. Step 5: Solve for x
   x = 497,840,492.23/21,876.57
6. Step 6: Final answer
   x = 22,756.79