Finding the Fourth Proportional to 11,421.50, 17,139.45 and 4,495.82

Step by Step Solution

1. Step 1: Write the proportion equation
   11,421.50 : 17,139.45 = 4,495.82 : x
2. Step 2: Convert to fraction form
   11,421.50/17,139.45 = 4,495.82/x
3. Step 3: Cross multiply
   11,421.50x = 17,139.45 × 4,495.82
4. Step 4: Simplify right side
   11,421.50x = 77,055,882.10
5. Step 5: Solve for x
   x = 77,055,882.10/11,421.50
6. Step 6: Final answer
   x = 6,746.56