Finding the Fourth Proportional to 11,499.48, 17,245.31 and 4,478.94

Step by Step Solution

1. Step 1: Write the proportion equation
   11,499.48 : 17,245.31 = 4,478.94 : x
2. Step 2: Convert to fraction form
   11,499.48/17,245.31 = 4,478.94/x
3. Step 3: Cross multiply
   11,499.48x = 17,245.31 × 4,478.94
4. Step 4: Simplify right side
   11,499.48x = 77,240,686.38
5. Step 5: Solve for x
   x = 77,240,686.38/11,499.48
6. Step 6: Final answer
   x = 6,716.89