Finding the Fourth Proportional to 10,429.40, 14,394.57 and 8,156.24

Step by Step Solution

1. Step 1: Write the proportion equation
   10,429.40 : 14,394.57 = 8,156.24 : x
2. Step 2: Convert to fraction form
   10,429.40/14,394.57 = 8,156.24/x
3. Step 3: Cross multiply
   10,429.40x = 14,394.57 × 8,156.24
4. Step 4: Simplify right side
   10,429.40x = 117,405,495.64
5. Step 5: Solve for x
   x = 117,405,495.64/10,429.40
6. Step 6: Final answer
   x = 11,257.17