Finding the Fourth Proportional to 21,499.40, 32,261.58 and 9,018.44

Step by Step Solution

1. Step 1: Write the proportion equation
   21,499.40 : 32,261.58 = 9,018.44 : x
2. Step 2: Convert to fraction form
   21,499.40/32,261.58 = 9,018.44/x
3. Step 3: Cross multiply
   21,499.40x = 32,261.58 × 9,018.44
4. Step 4: Simplify right side
   21,499.40x = 290,949,123.54
5. Step 5: Solve for x
   x = 290,949,123.54/21,499.40
6. Step 6: Final answer
   x = 13,532.90