Finding the Fourth Proportional to 14,978.10, 20,663.73 and 9,308.82

Step by Step Solution

1. Step 1: Write the proportion equation
   14,978.10 : 20,663.73 = 9,308.82 : x
2. Step 2: Convert to fraction form
   14,978.10/20,663.73 = 9,308.82/x
3. Step 3: Cross multiply
   14,978.10x = 20,663.73 × 9,308.82
4. Step 4: Simplify right side
   14,978.10x = 192,354,943.10
5. Step 5: Solve for x
   x = 192,354,943.10/14,978.10
6. Step 6: Final answer
   x = 12,842.41