Finding the Fourth Proportional to 22,969.71, 31,674.88 and 21,630.32

Step by Step Solution

1. Step 1: Write the proportion equation
   22,969.71 : 31,674.88 = 21,630.32 : x
2. Step 2: Convert to fraction form
   22,969.71/31,674.88 = 21,630.32/x
3. Step 3: Cross multiply
   22,969.71x = 31,674.88 × 21,630.32
4. Step 4: Simplify right side
   22,969.71x = 685,137,777.81
5. Step 5: Solve for x
   x = 685,137,777.81/22,969.71
6. Step 6: Final answer
   x = 29,827.88