Finding the Fourth Proportional to 21,361.98, 32,047.52 and 7,318.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,361.98 : 32,047.52 = 7,318.25 : x
2. Step 2: Convert to fraction form
   21,361.98/32,047.52 = 7,318.25/x
3. Step 3: Cross multiply
   21,361.98x = 32,047.52 × 7,318.25
4. Step 4: Simplify right side
   21,361.98x = 234,531,566.41
5. Step 5: Solve for x
   x = 234,531,566.41/21,361.98
6. Step 6: Final answer
   x = 10,978.92