Finding the Fourth Proportional to 11,789.77, 17,687.69 and 3,470.07

Step by Step Solution

1. Step 1: Write the proportion equation
   11,789.77 : 17,687.69 = 3,470.07 : x
2. Step 2: Convert to fraction form
   11,789.77/17,687.69 = 3,470.07/x
3. Step 3: Cross multiply
   11,789.77x = 17,687.69 × 3,470.07
4. Step 4: Simplify right side
   11,789.77x = 61,377,522.44
5. Step 5: Solve for x
   x = 61,377,522.44/11,789.77
6. Step 6: Final answer
   x = 5,206.00