Finding the Fourth Proportional to 7,131.69, 10,693.59 and 2,917.91

Step by Step Solution

1. Step 1: Write the proportion equation
   7,131.69 : 10,693.59 = 2,917.91 : x
2. Step 2: Convert to fraction form
   7,131.69/10,693.59 = 2,917.91/x
3. Step 3: Cross multiply
   7,131.69x = 10,693.59 × 2,917.91
4. Step 4: Simplify right side
   7,131.69x = 31,202,933.20
5. Step 5: Solve for x
   x = 31,202,933.20/7,131.69
6. Step 6: Final answer
   x = 4,375.25