Finding the Fourth Proportional to 21,823.72, 30,134.50 and 17,791.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,823.72 : 30,134.50 = 17,791.18 : x
2. Step 2: Convert to fraction form
   21,823.72/30,134.50 = 17,791.18/x
3. Step 3: Cross multiply
   21,823.72x = 30,134.50 × 17,791.18
4. Step 4: Simplify right side
   21,823.72x = 536,128,313.71
5. Step 5: Solve for x
   x = 536,128,313.71/21,823.72
6. Step 6: Final answer
   x = 24,566.31