Finding the Fourth Proportional to 31,162.71, 42,989.60 and 22,651.64

Step by Step Solution

1. Step 1: Write the proportion equation
   31,162.71 : 42,989.60 = 22,651.64 : x
2. Step 2: Convert to fraction form
   31,162.71/42,989.60 = 22,651.64/x
3. Step 3: Cross multiply
   31,162.71x = 42,989.60 × 22,651.64
4. Step 4: Simplify right side
   31,162.71x = 973,784,942.94
5. Step 5: Solve for x
   x = 973,784,942.94/31,162.71
6. Step 6: Final answer
   x = 31,248.40