Finding the Fourth Proportional to 21,168.46, 29,145.96 and 17,975.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,168.46 : 29,145.96 = 17,975.05 : x
2. Step 2: Convert to fraction form
   21,168.46/29,145.96 = 17,975.05/x
3. Step 3: Cross multiply
   21,168.46x = 29,145.96 × 17,975.05
4. Step 4: Simplify right side
   21,168.46x = 523,900,088.30
5. Step 5: Solve for x
   x = 523,900,088.30/21,168.46
6. Step 6: Final answer
   x = 24,749.09