Finding the Fourth Proportional to 21,490.48, 32,229.50 and 7,449.94

Step by Step Solution

1. Step 1: Write the proportion equation
   21,490.48 : 32,229.50 = 7,449.94 : x
2. Step 2: Convert to fraction form
   21,490.48/32,229.50 = 7,449.94/x
3. Step 3: Cross multiply
   21,490.48x = 32,229.50 × 7,449.94
4. Step 4: Simplify right side
   21,490.48x = 240,107,844.27
5. Step 5: Solve for x
   x = 240,107,844.27/21,490.48
6. Step 6: Final answer
   x = 11,172.75