Finding the Fourth Proportional to 10,420.31, 14,380.04 and 5,704.61

Step by Step Solution

1. Step 1: Write the proportion equation
   10,420.31 : 14,380.04 = 5,704.61 : x
2. Step 2: Convert to fraction form
   10,420.31/14,380.04 = 5,704.61/x
3. Step 3: Cross multiply
   10,420.31x = 14,380.04 × 5,704.61
4. Step 4: Simplify right side
   10,420.31x = 82,032,462.35
5. Step 5: Solve for x
   x = 82,032,462.35/10,420.31
6. Step 6: Final answer
   x = 7,872.36