Finding the Fourth Proportional to 22,750.56, 31,383.78 and 15,664.68

Step by Step Solution

1. Step 1: Write the proportion equation
   22,750.56 : 31,383.78 = 15,664.68 : x
2. Step 2: Convert to fraction form
   22,750.56/31,383.78 = 15,664.68/x
3. Step 3: Cross multiply
   22,750.56x = 31,383.78 × 15,664.68
4. Step 4: Simplify right side
   22,750.56x = 491,616,870.89
5. Step 5: Solve for x
   x = 491,616,870.89/22,750.56
6. Step 6: Final answer
   x = 21,609.00