Finding the Fourth Proportional to 21,443.68, 32,174.70 and 8,966.62

Step by Step Solution

1. Step 1: Write the proportion equation
   21,443.68 : 32,174.70 = 8,966.62 : x
2. Step 2: Convert to fraction form
   21,443.68/32,174.70 = 8,966.62/x
3. Step 3: Cross multiply
   21,443.68x = 32,174.70 × 8,966.62
4. Step 4: Simplify right side
   21,443.68x = 288,498,308.51
5. Step 5: Solve for x
   x = 288,498,308.51/21,443.68
6. Step 6: Final answer
   x = 13,453.77