Finding the Fourth Proportional to 22,931.79, 31,647.15 and 17,256.33

Step by Step Solution

1. Step 1: Write the proportion equation
   22,931.79 : 31,647.15 = 17,256.33 : x
2. Step 2: Convert to fraction form
   22,931.79/31,647.15 = 17,256.33/x
3. Step 3: Cross multiply
   22,931.79x = 31,647.15 × 17,256.33
4. Step 4: Simplify right side
   22,931.79x = 546,113,663.96
5. Step 5: Solve for x
   x = 546,113,663.96/22,931.79
6. Step 6: Final answer
   x = 23,814.70