Finding the Fourth Proportional to 21,499.84, 29,596.96 and 18,498.24

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499.84 : 29,596.96 = 18,498.24 : x
2. Step 2: Convert to fraction form
   21,499.84/29,596.96 = 18,498.24/x
3. Step 3: Cross multiply
   21,499.84x = 29,596.96 × 18,498.24
4. Step 4: Simplify right side
   21,499.84x = 547,491,669.35
5. Step 5: Solve for x
   x = 547,491,669.35/21,499.84
6. Step 6: Final answer
   x = 25,464.92