Finding the Fourth Proportional to 22,434.17, 33,386.45 and 21,686.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,434.17 : 33,386.45 = 21,686.72 : x
2. Step 2: Convert to fraction form
   22,434.17/33,386.45 = 21,686.72/x
3. Step 3: Cross multiply
   22,434.17x = 33,386.45 × 21,686.72
4. Step 4: Simplify right side
   22,434.17x = 724,042,317.58
5. Step 5: Solve for x
   x = 724,042,317.58/22,434.17
6. Step 6: Final answer
   x = 32,274.09