Finding the Fourth Proportional to 10,420.84, 14,381.12 and 5,705.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,420.84 : 14,381.12 = 5,705.15 : x
2. Step 2: Convert to fraction form
   10,420.84/14,381.12 = 5,705.15/x
3. Step 3: Cross multiply
   10,420.84x = 14,381.12 × 5,705.15
4. Step 4: Simplify right side
   10,420.84x = 82,046,418.24
5. Step 5: Solve for x
   x = 82,046,418.24/10,420.84
6. Step 6: Final answer
   x = 7,873.31