Finding the Fourth Proportional to 11,688.56, 17,522.41 and 4,291.30

Step by Step Solution

1. Step 1: Write the proportion equation
   11,688.56 : 17,522.41 = 4,291.30 : x
2. Step 2: Convert to fraction form
   11,688.56/17,522.41 = 4,291.30/x
3. Step 3: Cross multiply
   11,688.56x = 17,522.41 × 4,291.30
4. Step 4: Simplify right side
   11,688.56x = 75,193,918.03
5. Step 5: Solve for x
   x = 75,193,918.03/11,688.56
6. Step 6: Final answer
   x = 6,433.12