Finding the Fourth Proportional to 21,443.54, 32,159.15 and 7,399.92

Step by Step Solution

1. Step 1: Write the proportion equation
   21,443.54 : 32,159.15 = 7,399.92 : x
2. Step 2: Convert to fraction form
   21,443.54/32,159.15 = 7,399.92/x
3. Step 3: Cross multiply
   21,443.54x = 32,159.15 × 7,399.92
4. Step 4: Simplify right side
   21,443.54x = 237,975,133.76
5. Step 5: Solve for x
   x = 237,975,133.76/21,443.54
6. Step 6: Final answer
   x = 11,097.76