Finding the Fourth Proportional to 21,096.90, 31,647.16 and 5,514.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,096.90 : 31,647.16 = 5,514.50 : x
2. Step 2: Convert to fraction form
   21,096.90/31,647.16 = 5,514.50/x
3. Step 3: Cross multiply
   21,096.90x = 31,647.16 × 5,514.50
4. Step 4: Simplify right side
   21,096.90x = 174,518,263.82
5. Step 5: Solve for x
   x = 174,518,263.82/21,096.90
6. Step 6: Final answer
   x = 8,272.22