Finding the Fourth Proportional to 11,623.10, 17,431.54 and 5,047.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,623.10 : 17,431.54 = 5,047.79 : x
2. Step 2: Convert to fraction form
   11,623.10/17,431.54 = 5,047.79/x
3. Step 3: Cross multiply
   11,623.10x = 17,431.54 × 5,047.79
4. Step 4: Simplify right side
   11,623.10x = 87,990,653.52
5. Step 5: Solve for x
   x = 87,990,653.52/11,623.10
6. Step 6: Final answer
   x = 7,570.33