Finding the Fourth Proportional to 21,002.56, 31,511.48 and 9,763.08

Step by Step Solution

1. Step 1: Write the proportion equation
   21,002.56 : 31,511.48 = 9,763.08 : x
2. Step 2: Convert to fraction form
   21,002.56/31,511.48 = 9,763.08/x
3. Step 3: Cross multiply
   21,002.56x = 31,511.48 × 9,763.08
4. Step 4: Simplify right side
   21,002.56x = 307,649,100.16
5. Step 5: Solve for x
   x = 307,649,100.16/21,002.56
6. Step 6: Final answer
   x = 14,648.17