Finding the Fourth Proportional to 21,673.72, 32,491.12 and 7,819.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,673.72 : 32,491.12 = 7,819.48 : x
2. Step 2: Convert to fraction form
   21,673.72/32,491.12 = 7,819.48/x
3. Step 3: Cross multiply
   21,673.72x = 32,491.12 × 7,819.48
4. Step 4: Simplify right side
   21,673.72x = 254,063,663.02
5. Step 5: Solve for x
   x = 254,063,663.02/21,673.72
6. Step 6: Final answer
   x = 11,722.20