Finding the Fourth Proportional to 10,380.56, 14,325.18 and 5,665.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,380.56 : 14,325.18 = 5,665.12 : x
2. Step 2: Convert to fraction form
   10,380.56/14,325.18 = 5,665.12/x
3. Step 3: Cross multiply
   10,380.56x = 14,325.18 × 5,665.12
4. Step 4: Simplify right side
   10,380.56x = 81,153,863.72
5. Step 5: Solve for x
   x = 81,153,863.72/10,380.56
6. Step 6: Final answer
   x = 7,817.87