Finding the Fourth Proportional to 11,808.91, 17,703.31 and 5,231.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,808.91 : 17,703.31 = 5,231.50 : x
2. Step 2: Convert to fraction form
   11,808.91/17,703.31 = 5,231.50/x
3. Step 3: Cross multiply
   11,808.91x = 17,703.31 × 5,231.50
4. Step 4: Simplify right side
   11,808.91x = 92,614,918.32
5. Step 5: Solve for x
   x = 92,614,918.32/11,808.91
6. Step 6: Final answer
   x = 7,842.80