Finding the Fourth Proportional to 10,424.12, 14,385.18 and 5,708.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,424.12 : 14,385.18 = 5,708.12 : x
2. Step 2: Convert to fraction form
   10,424.12/14,385.18 = 5,708.12/x
3. Step 3: Cross multiply
   10,424.12x = 14,385.18 × 5,708.12
4. Step 4: Simplify right side
   10,424.12x = 82,112,333.66
5. Step 5: Solve for x
   x = 82,112,333.66/10,424.12
6. Step 6: Final answer
   x = 7,877.15