Finding the Fourth Proportional to 10,380.48, 14,325 and 5,664.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,380.48 : 14,325 = 5,664.72 : x
2. Step 2: Convert to fraction form
   10,380.48/14,325 = 5,664.72/x
3. Step 3: Cross multiply
   10,380.48x = 14,325 × 5,664.72
4. Step 4: Simplify right side
   10,380.48x = 81,147,114
5. Step 5: Solve for x
   x = 81,147,114/10,380.48
6. Step 6: Final answer
   x = 7,817.28