Finding the Fourth Proportional to 10,620.64, 14,654.82 and 6,144.04

Step by Step Solution

1. Step 1: Write the proportion equation
   10,620.64 : 14,654.82 = 6,144.04 : x
2. Step 2: Convert to fraction form
   10,620.64/14,654.82 = 6,144.04/x
3. Step 3: Cross multiply
   10,620.64x = 14,654.82 × 6,144.04
4. Step 4: Simplify right side
   10,620.64x = 90,039,800.27
5. Step 5: Solve for x
   x = 90,039,800.27/10,620.64
6. Step 6: Final answer
   x = 8,477.81