Finding the Fourth Proportional to 14,693, 21,990.76 and 13,379.78

Step by Step Solution

1. Step 1: Write the proportion equation
   14,693 : 21,990.76 = 13,379.78 : x
2. Step 2: Convert to fraction form
   14,693/21,990.76 = 13,379.78/x
3. Step 3: Cross multiply
   14,693x = 21,990.76 × 13,379.78
4. Step 4: Simplify right side
   14,693x = 294,231,530.83
5. Step 5: Solve for x
   x = 294,231,530.83/14,693
6. Step 6: Final answer
   x = 20,025.29