Finding the Fourth Proportional to 11,710.48, 17,566.86 and 3,390.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,710.48 : 17,566.86 = 3,390.31 : x
2. Step 2: Convert to fraction form
   11,710.48/17,566.86 = 3,390.31/x
3. Step 3: Cross multiply
   11,710.48x = 17,566.86 × 3,390.31
4. Step 4: Simplify right side
   11,710.48x = 59,557,101.13
5. Step 5: Solve for x
   x = 59,557,101.13/11,710.48
6. Step 6: Final answer
   x = 5,085.80