Finding the Fourth Proportional to 11,507.21, 17,262.71 and 4,109.69

Step by Step Solution

1. Step 1: Write the proportion equation
   11,507.21 : 17,262.71 = 4,109.69 : x
2. Step 2: Convert to fraction form
   11,507.21/17,262.71 = 4,109.69/x
3. Step 3: Cross multiply
   11,507.21x = 17,262.71 × 4,109.69
4. Step 4: Simplify right side
   11,507.21x = 70,944,279.80
5. Step 5: Solve for x
   x = 70,944,279.80/11,507.21
6. Step 6: Final answer
   x = 6,165.21