Finding the Fourth Proportional to 10,456.02, 14,442.30 and 7,815.42

Step by Step Solution

1. Step 1: Write the proportion equation
   10,456.02 : 14,442.30 = 7,815.42 : x
2. Step 2: Convert to fraction form
   10,456.02/14,442.30 = 7,815.42/x
3. Step 3: Cross multiply
   10,456.02x = 14,442.30 × 7,815.42
4. Step 4: Simplify right side
   10,456.02x = 112,872,640.27
5. Step 5: Solve for x
   x = 112,872,640.27/10,456.02
6. Step 6: Final answer
   x = 10,794.99