Finding the Fourth Proportional to 12,345.57, 18,525.42 and 5,229.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,345.57 : 18,525.42 = 5,229.27 : x
2. Step 2: Convert to fraction form
   12,345.57/18,525.42 = 5,229.27/x
3. Step 3: Cross multiply
   12,345.57x = 18,525.42 × 5,229.27
4. Step 4: Simplify right side
   12,345.57x = 96,874,423.04
5. Step 5: Solve for x
   x = 96,874,423.04/12,345.57
6. Step 6: Final answer
   x = 7,846.90