Finding the Fourth Proportional to 14,978.60, 20,674.58 and 8,693

Step by Step Solution

1. Step 1: Write the proportion equation
   14,978.60 : 20,674.58 = 8,693 : x
2. Step 2: Convert to fraction form
   14,978.60/20,674.58 = 8,693/x
3. Step 3: Cross multiply
   14,978.60x = 20,674.58 × 8,693
4. Step 4: Simplify right side
   14,978.60x = 179,724,123.94
5. Step 5: Solve for x
   x = 179,724,123.94/14,978.60
6. Step 6: Final answer
   x = 11,998.73