Finding the Fourth Proportional to 11,575.98, 17,364.69 and 3,143.79

Step by Step Solution

1. Step 1: Write the proportion equation
   11,575.98 : 17,364.69 = 3,143.79 : x
2. Step 2: Convert to fraction form
   11,575.98/17,364.69 = 3,143.79/x
3. Step 3: Cross multiply
   11,575.98x = 17,364.69 × 3,143.79
4. Step 4: Simplify right side
   11,575.98x = 54,590,938.78
5. Step 5: Solve for x
   x = 54,590,938.78/11,575.98
6. Step 6: Final answer
   x = 4,715.88