Finding the Fourth Proportional to 11,357.79, 17,049.47 and 4,789.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,357.79 : 17,049.47 = 4,789.50 : x
2. Step 2: Convert to fraction form
   11,357.79/17,049.47 = 4,789.50/x
3. Step 3: Cross multiply
   11,357.79x = 17,049.47 × 4,789.50
4. Step 4: Simplify right side
   11,357.79x = 81,658,412.62
5. Step 5: Solve for x
   x = 81,658,412.62/11,357.79
6. Step 6: Final answer
   x = 7,189.64