Finding the Fourth Proportional to 21,404.18, 32,111.40 and 9,714.80

Step by Step Solution

1. Step 1: Write the proportion equation
   21,404.18 : 32,111.40 = 9,714.80 : x
2. Step 2: Convert to fraction form
   21,404.18/32,111.40 = 9,714.80/x
3. Step 3: Cross multiply
   21,404.18x = 32,111.40 × 9,714.80
4. Step 4: Simplify right side
   21,404.18x = 311,955,828.72
5. Step 5: Solve for x
   x = 311,955,828.72/21,404.18
6. Step 6: Final answer
   x = 14,574.53