Finding the Fourth Proportional to 21,558.48, 32,327.31 and 7,518.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,558.48 : 32,327.31 = 7,518.18 : x
2. Step 2: Convert to fraction form
   21,558.48/32,327.31 = 7,518.18/x
3. Step 3: Cross multiply
   21,558.48x = 32,327.31 × 7,518.18
4. Step 4: Simplify right side
   21,558.48x = 243,042,535.50
5. Step 5: Solve for x
   x = 243,042,535.50/21,558.48
6. Step 6: Final answer
   x = 11,273.64