Finding the Fourth Proportional to 21,388.71, 32,086.25 and 8,901.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,388.71 : 32,086.25 = 8,901.62 : x
2. Step 2: Convert to fraction form
   21,388.71/32,086.25 = 8,901.62/x
3. Step 3: Cross multiply
   21,388.71x = 32,086.25 × 8,901.62
4. Step 4: Simplify right side
   21,388.71x = 285,619,668.77
5. Step 5: Solve for x
   x = 285,619,668.77/21,388.71
6. Step 6: Final answer
   x = 13,353.76