Finding the Fourth Proportional to 11,705.83, 17,567.97 and 5,136.55

Step by Step Solution

1. Step 1: Write the proportion equation
   11,705.83 : 17,567.97 = 5,136.55 : x
2. Step 2: Convert to fraction form
   11,705.83/17,567.97 = 5,136.55/x
3. Step 3: Cross multiply
   11,705.83x = 17,567.97 × 5,136.55
4. Step 4: Simplify right side
   11,705.83x = 90,238,756.30
5. Step 5: Solve for x
   x = 90,238,756.30/11,705.83
6. Step 6: Final answer
   x = 7,708.87