Finding the Fourth Proportional to 17,621.53, 24,298.72 and 13,380.37

Step by Step Solution

1. Step 1: Write the proportion equation
   17,621.53 : 24,298.72 = 13,380.37 : x
2. Step 2: Convert to fraction form
   17,621.53/24,298.72 = 13,380.37/x
3. Step 3: Cross multiply
   17,621.53x = 24,298.72 × 13,380.37
4. Step 4: Simplify right side
   17,621.53x = 325,125,864.13
5. Step 5: Solve for x
   x = 325,125,864.13/17,621.53
6. Step 6: Final answer
   x = 18,450.49