Finding the Fourth Proportional to 14,321.64, 19,770.72 and 9,019.32

Step by Step Solution

1. Step 1: Write the proportion equation
   14,321.64 : 19,770.72 = 9,019.32 : x
2. Step 2: Convert to fraction form
   14,321.64/19,770.72 = 9,019.32/x
3. Step 3: Cross multiply
   14,321.64x = 19,770.72 × 9,019.32
4. Step 4: Simplify right side
   14,321.64x = 178,318,450.31
5. Step 5: Solve for x
   x = 178,318,450.31/14,321.64
6. Step 6: Final answer
   x = 12,450.98