Finding the Fourth Proportional to 10,420.52, 14,380.34 and 5,705.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,420.52 : 14,380.34 = 5,705.10 : x
2. Step 2: Convert to fraction form
   10,420.52/14,380.34 = 5,705.10/x
3. Step 3: Cross multiply
   10,420.52x = 14,380.34 × 5,705.10
4. Step 4: Simplify right side
   10,420.52x = 82,041,249.21
5. Step 5: Solve for x
   x = 82,041,249.21/10,420.52
6. Step 6: Final answer
   x = 7,873.05