Finding the Fourth Proportional to 21,155.23, 31,733.72 and 17,450.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,155.23 : 31,733.72 = 17,450.56 : x
2. Step 2: Convert to fraction form
   21,155.23/31,733.72 = 17,450.56/x
3. Step 3: Cross multiply
   21,155.23x = 31,733.72 × 17,450.56
4. Step 4: Simplify right side
   21,155.23x = 553,771,268.18
5. Step 5: Solve for x
   x = 553,771,268.18/21,155.23
6. Step 6: Final answer
   x = 26,176.56